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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); 2 (2); 3 (1, 2); 9 (1-2); 10; 11; 12; 13 (2); 14 (1-2); 15; 16; 17; 18; 19 (2); 20 (1, 2); 21 (1, 2); 22 (1, 2); 23 (1, 2); 24 (1, 2); 25 (1, 2); 26 (1, 2); 27 (1, 2); 28 (1, 2); 29 (1, 2); 30 (1, 2); 31 (1, 2); 32 (1, 2); 33 (1, 2); 34 (1, 2); 35 (1 to 4); 36 (1, 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 3); 40 (1 to 4); 41 (1-2, 3, 4); 42 (1, 2-3, 4); 43 (1 to 4); 44 (1-2, 3, 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 50 (1)
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Internet Archive
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Preserved
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2025-08-08
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1 to 34
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CLOCKSS Archive
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Preserved
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2026-04-06
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1 to 49
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LOCKSS Archive
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Preserved
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2026-04-06
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1 to 48
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LOCKSS Archive
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In Progress
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2026-04-06
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49, 50
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Portico
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Preserved
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2026-04-09
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Preserved : 1977: 1(1-2), 1978: 2(1-2), 1979: 3(1-2), 1980: 4(1-2), 1981: 5(1-2), 1982: 6(1-2), 1983: 7(1-2), 1984: 8(1-2), 1985: 9(1-2), 1986: 10(1-2), 1987: 11(1-2), 1988: 12(1-2), 1989: 13(1-2), 1990: 14(1-2), 1991: 15(1-2), 1992: 16(1-2), 1993: 17(1-2), 1994: 18(1-2), 1995: 19(1-2), 1996: 20(1-2), 1997: 21(1-2), 1998: 22(1-2), 1999: 23(1-2), 2000: 24(1-2), 2001: 25(1-2), 2002: 26(1-2), 2003: 27(1-2), 2004: 28(1-2), 2005: 29(1-2), 2006: 30(1-2), 2007: 31(1-2), 2008: 32(1-2), 2009: 33(1-2), 2010: 34(1-2), 2011: 35(1-4), 2012: 36(1-4), 2013: 37(1-4), 2014: 38(1-4), 2015: 39(1-4), 2016: 40(1-4), 2017: 41(1-4), 2018: 42(1-4), 2019: 43(1-4), 2020: 44(1-4), 2021: 45(1-4), 2022: 46(1-4), 2023: 47(1-4), 2024: 48(1-4), 2025: 49(1-4), 2026: 50(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 (1, 2); 4 (1 to 4); 21 (1, 2); 22 (1, 2); 23 (1, 2); 24 (1, 2); 25 (1, 2); 26 (1, 2); 27 (1, 2); 28 (1, 2); 29 (1, 2); 31 (1, 2); 32 (1, 2); 33 (1, 2); 34 (1, 2); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 41 (1-2, 3, 4); 42 (1, 2-3, 4); 43 (1 to 4); 44 (1-2, 3, 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (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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34 (1, 2); 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 (1-2, 3, 4); 42 (1, 2-3, 4); 43 (1 to 4); 44 (1-2, 3, 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4)
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