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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 29 (1, 2); 30 (1, 2); 31 (1, 2); 32 (1, 2); 33 (1, 2); 34 (1, 2); 35 (1-2); 36 (2); 37 (1 to 3); 38 (1, 2); 39 (1, 2); 40 (1, 2); 41 (1, 2); 42 (1, 2); 43 (1 to 3); 44 (1 to 3); 45 (1 to 3); 46 (1 to 3); 47 (1 to 3); 48 (1 to 3); 49 (1 to 3); 50 (1 to 3); 51 (1 to 3); 52 (1 to 3); 53 (1 to 3); 54 (1 to 3); 55 (1 to 3); 56 (1 to 3); 57 (1 to 3)
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LOCKSS Archive
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In Progress
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2026-05-04
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44, 51
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LOCKSS Archive
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Preserved
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2026-05-04
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45 to 50
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Internet Archive
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Preserved
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2025-08-08
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1 to 46
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CLOCKSS Archive
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Preserved
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2026-05-04
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1 to 58
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Portico
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Preserved
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2026-05-07
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Preserved : 1969: 1(1-2), 1970: 2(1-2), 1971: 3(1-2), 1972: 4(1-2), 1973: 5(1-2), 1974: 6(1-2), 1975: 7(1-2), 1976: 8(1-2), 1977: 9(1-2), 1978: 10(1-2), 1979: 11(1-2), 1980: 12(1-2), 1981: 13(1-2), 1982: 14(1-2), 1983: 15(1-2), 1984: 16(1-2), 1985: 17(1-2), 1986: 18(1-2), 1987: 19(1-2), 1988: 20(1-2), 1989: 21(1-2), 1990: 22(1-2), 1991: 23(1-2), 1992: 24(1-2), 1993: 25(1-2), 1994: 26(1-2), 1995: 27(1-2), 1996: 28(1-2), 1997: 29(1-2), 1998: 30(1-2), 1999: 31(1-2), 2000: 32(1-2), 2001: 33(1-2), 2002: 34(1-2), 2003: 35(1-2), 2004: 36(1-2), 2005: 37(1-3), 2006: 38(1-2), 2007: 39(1-2), 2008: 40(1-2), 2009: 41(1-2), 2010: 42(1-2), 2011: 43(1-3), 2012: 44(1-3), 2013: 45(1-3), 2014: 46(1-2), 2015: 47(1-3), 2016: 48(1-3), 2017: 49(1-3), 2018: 50(1-3), 2019: 51(1-3), 2020: 52(1-3), 2021: 53(1-3), 2022: 54(1-3), 2023: 55(1-3), 2024: 56(1-2), 2025: 57(1-3), 2026: 58(1)
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Library of Congress
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Preserved
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2025-04-07
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50 (1 to 3); 51 (1 to 3); 52 (1 to 3); 53 (1 to 3); 54 (1 to 3); 55 (1 to 3); 56 (1, 2)
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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 (2); 4 (1, 2); 29 (1, 2); 31 (1, 2); 32 (1, 2); 33 (1, 2); 34 (1, 2); 35 (1); 36 (2); 37 (1 to 3); 38 (1, 2); 39 (1, 2); 41 (1, 2); 42 (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 : 3 (2); 4 (1, 2); 29 (1, 2); 31 (1, 2); 32 (1, 2); 33 (1, 2); 34 (1, 2); 35 (1); 36 (2); 37 (1 to 3); 38 (1, 2); 39 (1, 2); 41 (1, 2); 42 (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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|
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Preserved : 5 (1 to 3); 42 (1, 2); 43 (1 to 3); 44 (1 to 3); 45 (1 to 3); 46 (1 to 3); 47 (1 to 3); 48 (1 to 3); 49 (1 to 3); 51 (1 to 3); 52 (1 to 3); 53 (1 to 3); 54 (1 to 3); 55 (1, 2); 56 (1 to 3)
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National Digital Preservation Program, China
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Preserved
|
2025-12-04
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Preserved : 5 (1 to 3); 42 (1, 2); 43 (1 to 3); 44 (1 to 3); 45 (1 to 3); 46 (1 to 3); 47 (1 to 3); 48 (1 to 3); 49 (1 to 3); 51 (1 to 3); 52 (1 to 3); 53 (1 to 3); 54 (1 to 3); 55 (1, 2); 56 (1 to 3)
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National Library of the Netherlands
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Preserved
|
2024-12-15
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|
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Preserved : 29 (1, 2); 30 (1, 2); 31 (1, 2); 32; 33 (1, 2); 34 (1, 2); 35 (1-2); 36; 37 (2); 38 (1); 39 (2); 40; 41 (1, 2); 42 (1, 2); 43 (1-3); 44 (1-3); 45 (1-3); 46 (1-3); 47 (1-3); 48 (1-3); 49 (1-3); 50 (1-3); 51 (1, 2)
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