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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, 3‐4); 2 (1‐3, 4); 3 (1‐2, 3‐4); 4 (1‐2, 3‐4); 5 (1 to 4); 6 (1, 2‐4); 7 (1); 8; 9; 10; 11; 12; 13 (2 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 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 6); 27 (1 to 4); 28 (1 to 4); 29 (1 to 4, 5‐6); 30 (1 to 4); 31 (1 to 4); 32 (1 to 4); 33 (1, 2, 3‐4); 37 (1 to 4); 38 (1 to 4); 39 (1-2, 3, 4); 40 (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, 3, 4); 48 (1 to 4); 49 (s1, 1 to 4); 50 (1 to 3); 51 (1 to 4); 52 (2 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 8)
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Internet Archive
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Preserved
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2025-08-08
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6 to 32
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CLOCKSS Archive
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In Progress
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2026-04-06
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LOCKSS Archive
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In Progress
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2026-04-06
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Portico
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Preserved
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2026-04-09
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Preserved : 2022: 2022, 2023: 2023, 2024: 2024, 2025: 2025, 2026: 2026
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CLOCKSS Archive
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Preserved
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2026-04-06
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1, 22, 29 to 59
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Portico
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Preserved
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2026-04-09
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Preserved : 1963: 1(1-4), 1964: 2(1-4), 1965: 3(1-4), 1966: 4(1-4), 1967: 5(1-4), 1968: 6(1-4), 1969: 7(1), 1970: 8(1), 1971: 9(1), 1972: 10(1), 1973: 11(1), 1974: 12(1), 1975: 13(1-4), 1976: 14(1-4), 1977: 15(1-4), 1978: 16(1-4), 1979: 17(1-4), 1980: 18(1-4), 1981: 19(1-4), 1983: 20(1-4), 1983: 21(1-4), 1984: 22(1-4), 1985: 23(1-4), 1986: 24(1-4), 1987: 25(1-4), 1988: 26(1-6), 1989: 27(1-4), 1990: 28(1-4), 1991: 29(1-6), 1992: 30(1-4), 1993: 31(1-4), 1994: 32(1-4), 1995: 33(1-4), 1996: 34(1-4), 1997: 35(1-4), 1998: 36(3-4), 1999: 37(1-4), 2000: 38(1-4), 2001: 39(3-4), 2002: 40(1-4), 2003: 41(1-4), 2004: 42(1-4), 2005: 43(1-4), 2006: 44(1-4), 2007: 45(1-4), 2008: 46(1-4), 2009: 47(1-4), 2010: 48(1-4), 2011: 49(1-4), 2012: 50(1-4), 2013: 51(1-4), 2014: 52(1-4), 2015: 53(1-4), 2016: 54(1-4), 2017: 55(1-4), 2018: 56(1-4), 2019: 57(1-4), 2020: 58(1-4), 2021: 59(1-8), 2025: 2025(1), 2026: 2026(1)
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Library of Congress
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Preserved
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2025-04-07
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2023
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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 : 4 (1 to 4); 5 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1?2, 3, 4); 37 (1 to 4); 38 (1 to 4); 39 (1?2, 3, 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 (, 1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 8)
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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 : 4 (1 to 4); 5 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1?2, 3, 4); 37 (1 to 4); 38 (1 to 4); 39 (1?2, 3, 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 (, 1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 8)
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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 : 44 (2); 45 (1, 3, 4)
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