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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1); 2 (, 3); 3 (, 1); 4 (, 1); 5 (, 1); 6 (, 1); 7 (, 1); 8 (, 1); 9 (, 1); 10 (, 1, 2); 11 (, 1); 12 (, 1-2, 3, 4); 13 (, 1 to 4); 14 (, 1-2, 3-4); 15 (, 1, 2-4); 16 (, 1, 2-3, 4); 17 (, 1, 2-3, 4); 18 (, 1-2, 3, 4); 19 (, 1 to 4); 20 (, 1-2, 3-4); 21 (, 1, 2-3, 4); 22 (, 1-2, 3, 4); 23 (, 1, 2, 3-4); 24 (, 1, 2, 3-4); 25 (, 1 to 6); 26 (, 1 to 6); 27 (, 1 to 6); 28 (, 1 to 6); 29 (, 1 to 4, 5-6); 30 (, 1 to 6); 31 (, 1, 2, 3-4, 5, 6); 32 (, 1 to 4, 5-6); 33 (, 1 to 3, 4-5, 6); 34 (, 1, 2-3, 4 to 6); 35 (, 1-2, 3, 4, 5-6); 36 (, 1, 2, 3-4, 5-6); 37 (, 1 to 6); 38 (, 1 to 6); 39 (, 1, 2-3, 4 to 6); 40 (, 1-2, 3-4, 5-6); 41 (, 1-2, 3-4, 5-6); 42 (, 1-2, 3, 4-5, 6); 43 (, 1, 2-3, 4-5, 6); 44 (, 1 to 4, 5-6); 45 (, 1 to 6); 46 (, 1 to 6); 47 (, 1 to 6); 48 (, 1-2, 3, 4, 5-6); 49 (, 1); 50 (, 1-2, 3-6); 51 (, 1-2, 3-4, 5-6); 52 (, 1-6); 53 (, 1, 2-3); 54 (, 1-6); 55 (, 1-6); 56 (, 1, 2-6); 57 (, 1-2, 3-6); 58 (, 1-6); 59 (, 1, 2-6); 60 (, 1-6); 61 (, 1-6); 62 (, 1-6); 63 (, 1, 2-3, 4-6); 64 (, 1-6); 65 (, 1-6, 6); 66 (, 1-6); 67 (, 1, 2-6); 68 (, 1-6); 69 (, 1-6); 70 (, 1 to 4, 5-6); 71 (, 1-6); 72 (, 1-6); 73 (, 1, 2-6); 74 (, 1-6); 75 (, 1, 2-6); 76 (, 1-6); 77 (, 1-6); 78 (, 1-6); 79 (, 1-2, 3-6); 80 (, 1-6); 81 (, 1-2, 3-6, 5-6); 82 (, 1-6); 83 (, 1-6); 84 (, 1-6); 85 (, 1-6, 3-4); 86 (, 1-6, 5-6); 87 (, 1-2, 3-6); 88 (, 1-6); 89 (, 1-2, 3-6); 90 (, 1-6); 91 (, 1-6); 92 (, 1-6); 93 (, 1-6); 94 (, 1-6); 95 (, 1-4, 5-6); 96 (, 1-2, 3-4, 5-6); 97 (, 1-2, 3-4, 5-6); 98 (, 1-2, 3-4, 5-6); 99 (, 1-2, 3-4, 5-6); 100 (, 1-2, 3-4, 5-6); 101 (, 1-2, 3-4, 5-6); 102 (, 1-2, 3-4, 5-6); 103 (, 1-2, 3-4, 5-6); 104 (, 1-2, 3-4, 5-6); 105 (, 1-2, 3-4, 5-6); 106 (, 1-2, 3-4, 5-6); 107 (, 1-2, 3-4, 5-6); 108 (, 1-2, 3-4, 5-6); 109 (, 1-2, 3-4, 5-6); 110 (, 1-2, 3-4, 5-6); 111 (, 1 to 6); 112 (, 1 to 6); 113 (, 1 to 6); 114 (, 1 to 6); 115 (, 1 to 6); 116 (, 1 to 6); 117 (, 1 to 6); 118 (, 1 to 6, 533 to 535, 537 to 540, 543 to 545); 119 (, 1 to 8, 540); 120 (, 1 to 8, 537 to 545); 121 (, 1 to 8, 533, 540 to 543, 545); 122 (, 1 to 8); 123 (, 1 to 9, 543, 550); 124 (, 1 to 10); 125 (, 1 to 12); 126 (, 1 to 12); 127 (, 1 to 12); 128 (, 1 to 12); 129 (, 1 to 12); 130 (, 1 to 12); 131 (, 1 to 12); 132 (, 1 to 12); 133 (, 1 to 12); 134 (, 1 to 12); 135 (, 1 to 12); 136 (, 1 to 12); 137 (, 1 to 12); 138 (, 1 to 12); 139 (, 1 to 12); 140 (, 1 to 12); 141 (, 1 to 12); 142 (, 1, 2, 3-4, 5, 6, 7-8, 9-12); 143 (, 1 to 10, 11-12); 144 (, 2 to 4, 5-6, 7-8, 9, 10, 11-12); 145 (, 1 to 8); 1918; 1920; 1921; 1922; 1923; 1924; 1925; 1926; 1927; 1928; 1929; 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979; 1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 1996; 1997; 1998; 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 144
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CLOCKSS Archive
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Preserved
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2026-02-09
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ahead-of-print to 145
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LOCKSS Archive
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In Progress
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2026-02-09
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145
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Portico
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Preserved
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2026-02-12
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Preserved : 1923: 5(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1937: 25(3)
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Portico
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Preserved
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2026-02-12
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Preserved : 1965: 59(2-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1970: 70(1-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1985: 99(5-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1987: 103(5-6), 1988: 105(1-4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1990: 110(5-6), 1991: 111(3), 1992: 112(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1993: 113(1-3), 1994: 114(2-4), 1995: 115(2), 1996: 116(2, S 521)
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Portico
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Preserved
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2026-02-12
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Preserved : 1998: 118(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 2003/2004: 123(1, 3-8), 2004: 124(1-4)
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Portico
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Preserved
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2026-02-12
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Preserved : 2009: 129(7, 12), 2010: 130(1-12, S 563), 2011: 131(1-12), 2012: 132(1, S 1, 2-12), 2012/2013: 133(1-12, S 564), 2014: 134(1-12), 2014/2015: 135(1-10)
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Portico
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Preserved
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2026-02-12
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Preserved : 1920: 2(3), 1921: 3(1), 1922: 4(1), 1923: 5(1), 1924: 6(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1925: 7(1), 1925: 8(1), 1926: 9(1), 1927: 10(1-2), 1927: 11(1), 1928: 12(3-4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1929: 13(1-4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1931: 15(1), 1931: 16(1, 4), 1932: 17(1, 4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1933: 18(3-4), 1934: 19(1-4), 1934: 21(1, 4), 1935: 22(3-4), 1936: 23(1-2), 1936: 24(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1937: 25(1-6), 1938: 26(1-6), 1939: 27(1-6), 1940: 28(1-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1941: 29(1-4), 1942: 30(1-6), 1943: 31(1-2, 5-6), 1944: 32(1-4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1945: 33(1-3, 6), 1946: 34(1, 4-6), 1947: 35(3-4), 1948: 36(1-6, sup78)
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Portico
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Preserved
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2026-02-12
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Preserved : 1949: 37(1-6), 1950: 38(1-6), 1951: 39(1-6), 1951: 40(1-6), 1952: 41(1-6), 1952: 42(1-6), 1953: 43(1-6), 1954: 44(1-6), 1955: 45(1-6), 1956: 46(1-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1957: 47(1-6), 1957: 48(1-6), 1958: 49(1), 1959: 50(1-6), 1960: 51(1-6), 1960: 52(1-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1961: 53(1-3), 1962: 54(1-6), 1962: 55(1-6), 1963: 56(1-6), 1964: 57(1-6), 1964: 58(1-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1965: 59(1-6), 1965: 60(1-6), 1966: 61(1-6), 1966: 62(1-6), 1967: 63(1-6), 1967: 64(1-6), 1968: 65(1-6), 1968: 66(1-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1969: 67(1-6), 1969: 68(1-6), 1970: 69(1-6), 1970: 70(1-6), 1971: 71(1-6), 1971: 72(1-6), 1972: 73(1-6), 1972: 74(1-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1973: 75(1-6), 1973: 76(1-6, sup314), 1974: 77(1-6, sup316, sup319-sup320), 1974: 78(1-6), 1975: 79(1-6), 1975: 80(1-6), 1976: 81(1-6), 1976: 82(1-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1977: 83(1-6), 1977: 84(1-6), 1978: 85(1-6), 1978: 86(1-6), 1979: 87(1-6), 1979: 88(1-6), 1980: 89(1-6), 1980: 90(1-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1981: 91(1-6), 1981: 92(1-6, sup383), 1982: 93(1-6), 1982: 94(1-6, sup392), 1983: 95(1-6), 1983: 96(1-6), 1984: 97(1-6), 1984: 98(1-6, sup417)
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Portico
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Preserved
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2026-02-12
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Preserved : 1985: 98(sup419), 1985/1986: 99(1-6, sup420), 1985: 100(1-6), 1986: 101(1-6), 1986: 102(1-6), 1987: 103(1-6), 1987: 104(1-6), 1988: 105(1-6), 1988: 106(1-6), 1989: 107(1-6), 1989: 108(1-6), 1990: 109(1-6, sup469-sup470), 1990: 110(1-6), 1991: 111(1-6), 1992: 112(1-6, sup493), 1993: 113(1-6), 1994: 114(1-6), 1995: 115(1-6), 1996: 116(1-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1997: 117(1-6), 1998: 118(1-6), 1999: 119(1-8), 2000: 120(1-8)
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Portico
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Preserved
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2026-02-12
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Preserved : 2001: 121(1-8), 2002: 122(1-8), 1999/2003: 123(1-9, sup543, sup550), 2004: 124(1-10, sup552), 2005: 125(1-12), 2006: 126(1-12), 2007: 127(1-12), 2007/2008: 128(1-12), 2009: 129(1-12, sup560-sup561), 2010: 130(1-12), 2011: 131(1-12), 2012: 132(1-12), 2012/2013: 133(1-12), 2014: 134(1-12), 2015: 135(1-12), 2016: 136(1-12), 2017: 137(1-12, sup565), 2018: 138(1-12), 2019: 139(1-12), 2020: 140(1-12), 2021: 141(1-12), 2022: 142(1-12), 2023: 143(1-12), 2024: 144(1-12), 2025: 145(1-3, 5-12), 2026: 146(1)
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National Digital Preservation Program, China
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Preserved
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2025-12-04
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Preserved : 12 (1 to 8, 54, 537 to 539, 541 to 545); 13 (sup563, 1 to 9, 11, 12); 14 (1 to 9, 11, 12); 117 (sup526, 1 to 6); 118 (1 to 6, 54, 533 to 535, 537 to 539, 543 to 545); 119 (1 to 8, 54); 121 (1 to 8, 54, 533, 541 to 543, 545); 122 (1 to 8); 123 (1 to 9, 55, 543); 124 (sup551, 1 to 9); 125 (1 to 9, 11, 12); 126 (sup556, 1 to 9, 11, 12); 127 (sup557, 1 to 9, 11, 12); 128 (1 to 9, 11, 12); 129 (sup56, 1 to 9, 11, 12); 131 (1 to 9, 11, 12); 132 (sup1, 1 to 9, 11, 12); 133 (sup564, 1 to 9, 11, 12); 134 (1 to 9, 11, 12); 135 (1 to 9, 11, 12); 136 (1 to 9, 11, 12); 137 (sup565, 1 to 9, 11, 12); 138 (sup1, 1 to 9, 11, 12); 139 (1 to 9, 11, 12); 141 (S1, 1 to 9, 11, 12); 142 (1, 2, 3-4, 5, 6, 7-8, 9-12); 143 (sup1, 1 to 9, 11-12); 144 (1 to 4, 5-6, 7-8, 9, 11-12); 145 (1, 2, 4)
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