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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (1‐2, 3‐4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 4); 10 (1 to 4); 11 (1 to 4); 12; 13 (1 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 20 (1 to 4); 21 (1 to 4); 22 (1, 2, 3‐4); 23 (1 to 4); 24 (1 to 4); 25 (1‐2, 3, 4); 26 (1, 2, 3‐4); 27 (1 to 4); 28 (1 to 4); 29 (1, 2‐3, 4); 30 (1, 2, 3‐4); 31 (1 to 4); 32 (1‐2, 3, 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 40 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 3); 50 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1-2, 3, 4); 55 (1, 2, 3-4); 56 (1-2, 3, 4); 57 (1-2, 3, 4); 58 (1-2, 3, 4); 59 (1-2, 3, 4); 60 (1-2, 3, 4); 61 (1-2, 3, 4); 62 (1-2, 3, 4); 63 (1‐2, 3‐4); 64 (1-4); 65; 66; 67; 68 (3-4); 69 (1-2, 3-4); 70 (1-2, 3-4); 71; 72 (1-2, 3-4); 73 (1-2, 3-4); 74 (1-2, 3-4); 75 (1-4); 76 (3-4); 77 (1-2)
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Internet Archive
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Preserved
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2025-08-08
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26 to 58
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Portico
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Preserved
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2026-05-07
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Preserved : 1948: 1(1-4), 1949: 2(1-4), 1950: 3(1-4), 1951: 4(1-4), 1952: 5(1-4), 1953: 6(1-4), 1954: 7(1-4), 1956: 8(1-4), 1956: 9(1-4), 1957: 10(1-4), 1958: 11(1-4), 1959: 12(4), 1960: 13(1-4), 1961: 14(1-4), 1962: 15(1-4), 1963: 16(1-4), 1964: 17(1-4), 1965: 18(1-4), 1966: 19(1-4), 1967: 20(1-4), 1968: 21(1-4), 1969: 22(1-4), 1971: 23(1-4), 1972: 24(1-4), 1973: 25(1-4), 1974: 26(1-4), 1975: 27(1-4), 1976: 28(1-4), 1977: 29(1-4), 1978: 30(1-4), 1979: 31(1-4), 1980: 32(1-4), 1981: 33(1-4), 1982: 34(1-4), 1983: 35(1-4), 1984: 36(1-4), 1985: 37(1-4), 1986: 38(1-4), 1987: 39(1-4), 1988: 40(1-4), 1989: 41(1-4), 1990: 42(1-4), 1991: 43(1-4), 1992: 44(1-4), 1993: 45(1-4), 1994: 46(1-4), 1995: 47(1-4), 1996: 48(1-4), 1997: 49(1-4), 1998: 50(1-4), 1999: 51(1-4), 2000: 52(1-4), 2001: 53(1-4), 2002: 54(3-4), 2003: 55(1-2)
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CLOCKSS Archive
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Preserved
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2026-05-04
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1, 43 to 70
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Portico
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Preserved
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2026-05-07
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Preserved : 2004: 56(3-4), 2005: 57(3-4), 2006: 58(3-4), 2007: 59(3-4), 2008: 60(1-4), 2009: 61(1-4), 2010: 62(1-4), 2011: 63(1-4), 2012: 64(1-4), 2013: 65(1-4), 2014: 66(1-4), 2015: 67(1-4), 2016: 68(1-4), 2017: 69(1-4), 2018: 70(1-4)
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CLOCKSS Archive
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Preserved
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2026-05-04
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1 to 73, 75, 76
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LOCKSS Archive
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Preserved
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2026-05-04
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1 to 76
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LOCKSS Archive
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In Progress
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2026-05-04
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77
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Portico
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Preserved
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2026-05-07
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Preserved : 1948: 1(1-4), 1949: 2(1-4), 1950: 3(1-4), 1951: 4(1-4), 1952: 5(1-4), 1953: 6(1-4), 1954: 7(1-4), 1956: 8(1-4), 1956: 9(1-4), 1957: 10(1-4), 1958: 11(1-4), 1959: 12(4), 1960: 13(1-4), 1961: 14(1-4), 1962: 15(1-4), 1963: 16(1-4), 1964: 17(1-4), 1965: 18(1-4), 1966: 19(1-4), 1967: 20(1-4), 1968: 21(1-4), 1969: 22(1-4), 1971: 23(1-4), 1972: 24(1-4), 1973: 25(1-4), 1974: 26(1-4), 1975: 27(1-4), 1976: 28(1-4), 1977: 29(1-4), 1978: 30(1-4), 1979: 31(1-4), 1980: 32(1-4), 1981: 33(1-4), 1982: 34(1-4), 1983: 35(1-4), 1984: 36(1-4), 1985: 37(1-4), 1986: 38(1-4), 1987: 39(1-4), 1988: 40(1-4), 1989: 41(1-4), 1990: 42(1-4), 1991: 43(1-4), 1992: 44(1-4), 1993: 45(1-4), 1994: 46(1-4), 1995: 47(1-4), 1996: 48(1-4), 1997: 49(1-4), 1998: 50(1-4), 1999: 51(1-4), 2000: 52(1-4), 2001: 53(1-4), 2002: 54(1-4), 2003: 55(1-4), 2004: 56(1-4), 2005: 57(1-4), 2006: 58(1-4), 2007: 59(1-4), 2008: 60(1-4), 2009: 61(1-4), 2010: 62(1-4), 2011: 63(1-4), 2012: 64(1-4), 2013: 65(1-4), 2014: 66(1-4), 2015: 67(1-4), 2016: 68(1-4), 2017: 69(1-4), 2018: 70(1-4), 2019: 71(1-4), 2020: 72(1-4), 2021: 73(1-4), 2022: 74(1-4), 2023: 75(1-4), 2024: 76(1-4), 2025: 77(1-4)
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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 : 5 (2 to 4); 6 (1-2, 3, 4); 7 (1-2, 3-4); 49 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1-2, 3, 4); 55 (1, 2, 3-4); 56 (1-2, 3, 4); 57 (1-2, 3, 4); 58 (1-2, 3, 4); 59 (1-2, 3, 4); 61 (1-2, 3, 4); 62 (1-2, 3, 4); 63 (1-2, 3-4); 64 (1-4); 65; 66; 67; 68 (3-4); 69 (1-2, 3-4); 71 (1-2, 3-4); 72 (1-2, 3-4); 73 (1-2, 3-4); 74 (1-2, 3-4); 75 (1-2); 76 (3-4)
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National Library of the Netherlands
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Preserved
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2024-12-15
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Preserved : 58 (1-2, 3, 4); 59 (1-2, 3, 4)
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Library of Congress
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Preserved
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2025-04-07
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71 (3-4); 72 (1-2, 3-4); 73 (1-2, 3-4); 74 (1-2, 3-4); 75 (1-4); 76 (1-2)
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