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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 28 (1, 2); 30 (, 1); 35 (, 1, 2, 4); 36 (, 1); 39 (, 1); 40 (, 1, 2); 41 (, 1, 4); 42 (, 1, 4); 43 (, 2 to 4); 44 (, 1 to 4); 45 (, 3, 4); 46 (, 1 to 4); 1998; 2000; 2005; 2006; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016
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LOCKSS Archive
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Preserved
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2026-02-09
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46
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 46
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Portico
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Preserved
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2026-02-12
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Preserved : 1971: 1(1-2), 1972: 2(1-4), 1973: 3(1-4), 1974: 4(1-4), 1975: 5(1-4), 1976: 6(1-4), 1977: 7(1-4), 1978: 8(1-4), 1979: 9(1-4), 1980: 10(1-4), 1981: 11(1-4), 1982: 12(1-4), 1983: 13(1-4), 1984: 14(1-4), 1985: 15(1-4), 1986: 16(1-4), 1987: 17(1-4), 1988: 18(1-4), 1989: 19(1-4), 1990: 20(1-4), 1991: 21(1, 3-4), 1992: 22(1-4), 1993: 23(1-4), 1994: 24(1-4), 1995: 25(1-4), 1996: 26(1-4), 1997: 27(1-4), 1998: 28(1-4), 1999: 29(1-4), 2000: 30(1-4), 2001: 31(1-4), 2002: 32(1-4), 2003: 33(1-4), 2004: 34(1-4), 2005: 35(1-4), 2006: 36(1-4), 2007: 37(1-4), 2008: 38(1-4), 2009: 39(1-4), 2010: 40(1-4), 2011: 41(1-4), 2012: 42(1-4), 2013: 43(1-4), 2014: 44(1-4), 2015: 45(1-4), 2016: 46(1-4)
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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 : 34 (3); 37 (4); 38 (1-4); 39 (1-4); 40 (1-4); 41 (1-4); 42 (1-4); 43 (1-4); 44 (1-4); 45 (1-4); 46 (1-4)
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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 : 1 (1 to 4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1, 2 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1, 2-3, 4); 9 (1 to 4); 11 (1 to 4); 12 (1 to 4); 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); 21 (1, 3, 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 4); 28 (1, 2, 3-4); 29 (1 to 4); 31 (1 to 4); 32 (1 to 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); 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 (Suppl 1, 1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 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 : 1 (1 to 4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1, 2 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1, 2-3, 4); 9 (1 to 4); 11 (1 to 4); 12 (1 to 4); 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); 21 (1, 3, 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 4); 28 (1, 2, 3-4); 29 (1 to 4); 31 (1 to 4); 32 (1 to 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); 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 (Suppl 1, 1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4)
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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 : 3 (1 to 4); 4 (1); 27 (2 to 4); 28 (1 to 3); 29 (1 to 4); 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1, 2); 39 (1 to 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 : 3 (1 to 4); 4 (1); 27 (2 to 4); 28 (1 to 3); 29 (1 to 4); 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1, 2); 39 (1 to 4)
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