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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); 3 (1 to 3); 4 (4); 5 (1, 3, 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 4); 10 (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); 20 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (1 to 6); 24 (1 to 6); 25 (S2, 1 to 9); 26 (1 to 12); 27 (1 to 12); 28 (1 to 12); 29 (1 to 4, 6 to 10, 12); 30 (1 to 10, 11-12); 31 (1 to 7, 8-9, 10); 32 (s1, 1 to 12); 33 (1 to 15); 34 (1 to 15); 35 (1 to 15); 36 (1 to 16); 37 (1 to 16); 38 (1 to 16); 39 (1 to 16); 40 (1 to 16); 41 (1 to 12); 42 (s1, 1 to 12); 43 (1 to 12); 44 (1 to 12); 45 (1 to 12); 46 (S1, 1 to 12); 47 (1 to 12); 48 (1 to 12); 49 (1 to 12); 50 (1 to 7, 9 to 12); 51 (1 to 12); 52 (1 to 12); 53 (1 to 18)
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Internet Archive
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Preserved
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2025-08-08
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11 to 45
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CLOCKSS Archive
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In Progress
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2026-03-30
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2023
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LOCKSS Archive
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Preserved
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2026-03-30
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2023
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Portico
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Preserved
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2026-04-02
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Preserved : 2023: 2023, 2024: 2024, 2025: 2025, 2026: 2026
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Portico
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Preserved
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2026-04-02
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Preserved : 1970: 1(1-2)
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Portico
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Preserved
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2026-04-02
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Preserved : 1972: 3(1-3), 1973: 4(3-4), 1974: 5(1, 3-4), 1975: 6(1-4), 1976: 7(1-4), 1977: 8(1-4), 1978: 9(1-4), 1979: 10(1-4), 1980: 11(1-4), 1981: 12(1-4), 1982: 13(1-4), 1983: 14(1-4), 1984: 15(1-4), 1985: 16(1-4), 1986: 17(1-4), 1987: 18(1-4), 1988: 19(1-4), 1989: 20(1-4), 1990: 21(1-4), 1991: 22(1-4), 1992: 23(1-6), 1993: 24(1-6), 1994: 25(1-2, S 2, 3-9), 1995: 26(1-12), 1996: 27(1-12), 1997: 28(1-12), 1998: 29(1-12), 1999: 30(1-10), 2000: 31(1-7, 10-12), 2001: 32(1-12), 2002: 33(1-12), 2003: 34(1-12), 2004: 35(1-12), 2005: 36(1-12), 2006: 37(1-12), 2007: 38(1-12), 2008: 39(1-12), 2008/2009: 40(1-12), 2009/2010: 41(1-12), 2010/2011: 42(1-12), 2012: 43(1-12), 2012/2013: 44(1-12), 2013/2014: 45(1-12), 2015: 46(1, S1, 2-12), 2016: 47(1-12), 2017: 48(1-12), 2018: 49(1-12), 2019: 50(1-12), 2020: 51(1-12), 2021: 52(1-12), 2022: 53(1-18), 2023: 2023(1), 2024: 2024(1), 2025: 2025(1), 2026: 2026(1)
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CLOCKSS Archive
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Preserved
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2026-03-30
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22 to 53
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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 9, 11?12); 4 (1 to 9, 11 to 16); 5 (1 to 9, 11, 12); 28 (1 to 9, 11, 12); 29 (1 to 9, 11, 12); 31 (1 to 7, 8?9, 11, 12); 32 (, 1 to 9, 11, 12); 33 (1 to 9, 11 to 15); 34 (1 to 9, 11 to 15); 35 (1 to 9, 11 to 15); 36 (1 to 9, 11 to 16); 37 (1 to 9, 11 to 16); 38 (1 to 9, 11 to 16); 39 (1 to 9, 11 to 16); 41 (1 to 9, 11, 12); 42 (, 1 to 9, 11, 12); 43 (1 to 9, 11, 12); 44 (1 to 9, 11, 12); 45 (1 to 9, 11, 12); 46 (, 1 to 9, 11, 12); 47 (1 to 9, 11, 12); 48 (1 to 9, 11, 12); 49 (1 to 9, 11, 12); 51 (1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (1 to 9, 12 to 15, 17, 18)
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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 9, 11?12); 4 (1 to 9, 11 to 16); 5 (1 to 9, 11, 12); 28 (1 to 9, 11, 12); 29 (1 to 9, 11, 12); 31 (1 to 7, 8?9, 11, 12); 32 (, 1 to 9, 11, 12); 33 (1 to 9, 11 to 15); 34 (1 to 9, 11 to 15); 35 (1 to 9, 11 to 15); 36 (1 to 9, 11 to 16); 37 (1 to 9, 11 to 16); 38 (1 to 9, 11 to 16); 39 (1 to 9, 11 to 16); 41 (1 to 9, 11, 12); 42 (, 1 to 9, 11, 12); 43 (1 to 9, 11, 12); 44 (1 to 9, 11, 12); 45 (1 to 9, 11, 12); 46 (, 1 to 9, 11, 12); 47 (1 to 9, 11, 12); 48 (1 to 9, 11, 12); 49 (1 to 9, 11, 12); 51 (1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (1 to 9, 12 to 15, 17, 18)
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Library of Congress
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Preserved
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2025-04-07
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2023; 2024
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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 : 37 (1-15); 38 (1-16)
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