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Portico
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Preserved
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2026-02-12
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Preserved : 1952: 13(1-4), 1953: 14(1-4), 1954: 15(1-4), 1955: 16(1-4), 1956: 17(1-4), 1957: 18(1-4), 1958: 19(1-4), 1959: 20(1-4), 1960: 21(1-4), 1961: 22(1-4), 1962: 23(1-4), 1963: 24(1-4), 1964: 25(1-4), 1965: 26(1-4), 1966: 27(1-4), 1967: 28(1-4), 1968: 29(1-4), 1969: 30(1-4), 1970: 31(1-4), 1971: 32(1-4), 1972: 33(1-4), 1973: 34(1-4), 1974: 35(1-4), 1975: 36(1-4), 1976: 37(1-4), 1977: 38(1-4), 1978: 39(1-6), 1979: 40(1-6), 1980: 41(1-6), 1981: 42(1-6), 1982: 43(1-6), 1983: 44(1-6), 1984: 45(1-6), 1985: 46(1-6), 1986: 47(1-6), 1987: 48(1-6), 1988: 49(1-6), 1989: 50(1-6), 1990: 51(1-6), 1991: 52(1-6), 1992: 53(1-6), 1993: 54(1-6), 1994: 55(1-6), 1995: 56(1-6)
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 3, 13 to 87
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Portico
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Preserved
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2026-02-12
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Preserved : 1931: 1(1-4), 1932: 2(1-4), 1933: 3(1-4)
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 57 (1 to 6); 58 (, 1 to 4); 59 (, 1 to 6); 60 (, 1 to 6); 61 (, 1 to 6); 62 (, 1 to 6); 63 (, 1 to 6); 64 (, 1 to 6); 65 (, 1 to 6); 66 (, 1 to 6); 67 (, 1 to 6); 68 (, 1 to 6); 69 (, 1 to 6); 70 (, 1 to 6); 71 (, 1 to 6); 72 (, 1 to 6); 73 (, 1 to 6); 74 (, 1 to 6); 75 (, 1 to 6); 76 (, 1 to 6); 77 (, 1 to 6); 78 (, 1 to 6); 79 (, 1 to 6); 80 (, 5, 6); 81 (, 1 to 6); 82 (, 1 to 6); 83 (, 1 to 6); 84 (, 1 to 6); 85 (, 2 to 6); 86 (, 1 to 4); 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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Portico
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Preserved
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2026-02-12
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Preserved : 1996: 57(1-6), 1997: 58(1-6), 1998: 59(1-6), 1999: 60(1-6), 2000: 61(1-6), 2001: 62(1-6), 2002: 63(1-6), 2003: 64(1-6), 2004: 65(1-6), 2005: 66(1-6), 2006: 67(1-6), 2007: 68(1-6), 2008: 69(1-6), 2009: 70(1-6), 2010: 71(1-6), 2011: 72(1-6), 2012: 73(1-6), 2013: 74(1-6), 2014: 75(1-6), 2015: 76(2-6), 2016: 77(1-6), 2017: 78(1-6), 2018: 79(1-6), 2019: 80(1-3, 5-6), 2020: 81(1-6), 2021: 82(1-6), 2022: 83(1, S 1, 2-6), 2023: 84(1, S 1, 2, S 2, 3, S 3, 4-6), 2024: 85(1, S 1, 2, S 2, 3-6), 2025: 86(1, S 1, 3-6), 2026: 87(1)
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LOCKSS Archive
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In Progress
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2026-02-09
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73, 80
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LOCKSS Archive
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Preserved
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2026-02-09
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74 to 79
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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 : 6 (1 to 6); 7 (1 to 6); 8 (1 to 6); 58 (1 to 6); 59 (1 to 6); 61 (1 to 6); 62 (1 to 6); 63 (1 to 6); 64 (1 to 6); 65 (1 to 6); 66 (1 to 6); 67 (1 to 6); 68 (1 to 6); 69 (1 to 6); 71 (1 to 6); 72 (1 to 6); 73 (1 to 6); 74 (1 to 6); 75 (1 to 6); 76 (1 to 6); 77 (1 to 6); 78 (1 to 6); 79 (1 to 6); 81 (1 to 6); 82 (1 to 6); 83 (Suppl 1, 1 to 6); 84 (Suppl 2, 1 to 6); 85 (Suppl 2, 1 to 6)
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National Digital Preservation Program, China
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Preserved
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2025-10-23
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Preserved : 6 (1 to 6); 7 (1 to 6); 8 (1 to 6); 58 (1 to 6); 59 (1 to 6); 61 (1 to 6); 62 (1 to 6); 63 (1 to 6); 64 (1 to 6); 65 (1 to 6); 66 (1 to 6); 67 (1 to 6); 68 (1 to 6); 69 (1 to 6); 71 (1 to 6); 72 (1 to 6); 73 (1 to 6); 74 (1 to 6); 75 (1 to 6); 76 (1 to 6); 77 (1 to 6); 78 (1 to 6); 79 (1 to 6); 81 (1 to 6); 82 (1 to 6); 83 (Suppl 1, 1 to 6); 84 (Suppl 3, 1 to 6); 85 (Suppl 2, 1 to 6)
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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 : 59 (4); 60 (1, 6); 61 (3-6); 62 (1-6); 63 (1-4, 6); 64 (1-6); 65 (1-6); 66 (1-6); 67 (1-4, 6); 68 (1, 3-6); 69 (1-6); 70 (1-6); 71 (1-6); 72 (1-6); 73 (1-6); 74 (1-4, 6); 75 (1-3, 5, 6); 76 (1-6); 77 (1-6); 78 (1-6); 79 (1, 3, 4, 6); 80 (1-3, 6)
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