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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 67 (1); 68; 69; 70; 71; 72; 73; 74; 75; 76; 77; 78; 79 (2); 80 (1, 2); 81 (1, 2); 82 (1, 2); 83 (1, 2); 84 (1, 2); 85 (1, 2); 86 (1, 2); 87 (1, 2); 88 (Suppl, 1, 2); 89 (1, 2); 90 (1, 2); 91 (1, 2); 92 (1, 2); 93 (1, 2); 94 (1, 2); 95 (1)
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Portico
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Preserved
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2026-04-09
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Preserved : 1922: 1(1), 1923: 2(1)
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CLOCKSS Archive
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Preserved
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2026-04-06
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1 to 95
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Portico
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Preserved
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2026-04-09
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Preserved : 1929: 7(1), 1931: 8(1), 1933: 9(1)
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Portico
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Preserved
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2026-04-09
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Preserved : 1949: 16(3-4)
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Portico
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Preserved
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2026-04-09
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Preserved : 1952: 18(1)
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Portico
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Preserved
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2026-04-09
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Preserved : 1955/1956: 20(1-4)
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Portico
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Preserved
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2026-04-09
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Preserved : 1958: 22(1), 1959: 23(1)
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Portico
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Preserved
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2026-04-09
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Preserved : 1964: 27(3-4)
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Portico
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Preserved
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2026-04-09
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Preserved : 1966: 29(3-4), 1967: 30(1-2)
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Portico
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Preserved
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2026-04-09
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Preserved : 1969: 33(1-2), 1969: 34(1-2)
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Portico
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Preserved
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2026-04-09
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Preserved : 1971: 35(3-4), 1971: 36(1), 1972: 38(1), 1973: 39(1), 1974: 41(1), 1974: 42(1), 1975: 43(1), 1975: 44(1), 1976: 45(1)
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Portico
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Preserved
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2026-04-09
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Preserved : 1978: 47(1), 1979: 48(1), 1979: 49(1), 1980: 50(1), 1981: 51(1), 1982: 52(1), 1983: 53(1), 1984: 54(1), 1985: 55(1), 1986: 56(1), 1987: 57(1), 1988: 58(1), 1989: 59(1), 1990: 60(1), 1991: 61(1), 1992: 62(1), 1993: 63(1), 1994: 64(1), 1995: 65(1), 1996: 66(1), 1997: 67(1), 1998: 68(1), 1999: 69(1), 2000: 70(1), 2001: 71(1), 2002: 72(1), 2003: 73(1), 2004: 74(1), 2005: 75(1), 2006: 76(1), 2007: 77(1), 2008: 78(1), 2009: 79(1-2), 2010: 80(1-2), 2011: 81(1-2), 2012: 82(1), 2013: 83(1-2), 2013: 84(1)
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LOCKSS Archive
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In Progress
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2026-04-06
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82, 89
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LOCKSS Archive
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Preserved
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2026-04-06
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83 to 88
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Portico
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Preserved
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2026-04-09
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Preserved : 2015: 85(1-2), 2016: 86(1-2), 2017: 87(1-2), 2018: 88(1, S 1, 2), 2019: 89(1-2), 2020: 90(1-2), 2021: 91(1-2), 2022: 92(1-2), 2023: 93(1-2), 2024: 94(1-2), 2025: 95(1-2)
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Library of Congress
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Preserved
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2025-04-07
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88 (1, S1, 2); 89 (1, 2); 90 (1, 2); 91 (2); 92 (1, 2); 93 (1, 2); 94 (1)
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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 : 77; 78; 79; 80 (2); 81 (1, 2); 82 (1, 2); 83; 84 (1, 2); 85 (1, 2); 86 (1, 2); 87 (1, 2); 88 (supplement-1, 1, 2); 89 (1)
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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 : 7 (1); 8 (2); 9 (1, 2); 67 (1); 68; 69; 71; 72; 73; 74; 75; 76; 77; 78; 79 (2); 81 (1, 2); 82 (1, 2); 83 (1, 2); 84 (1, 2); 85 (1, 2); 86 (1, 2); 87 (1, 2); 88 (Suppl 1, 1, 2); 89 (1, 2); 91 (1, 2); 92 (1, 2); 93 (1, 2); 94 (1, 2)
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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 : 7 (1); 8 (2); 9 (1, 2); 67 (1); 68; 69; 71; 72; 73; 74; 75; 76; 77; 78; 79 (2); 81 (1, 2); 82 (1, 2); 83 (1, 2); 84 (1, 2); 85 (1, 2); 86 (1, 2); 87 (1, 2); 88 (Suppl 1, 1, 2); 89 (1, 2); 91 (1, 2); 92 (1, 2); 93 (1, 2); 94 (1, 2)
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