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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 8 (1 to 6); 9 (1 to 6); 10 (1-2, 3-4, 5-6); 11 (1-2, 3-4, 5-6); 12 (1-2, 3-4, 5-6); 13 (1-2, 3-4, 5-6); 14 (1 to 4, 5-6); 15 (1 to 6); 16 (1 to 4, 5-6); 17 (1 to 6); 18 (1 to 6); 19 (1 to 6); 20 (1 to 6); 21 (1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 to 6); 25 (1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 30 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1, 2, 3-4, 5-6); 39 (1 to 5); 40 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1-2, 3 to 6); 46 (1 to 6); 47 (1-2, 3 to 6); 48 (1 to 6); 49 (1 to 6); 50 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 4, 5-6); 55 (1 to 6); 56 (1 to 6); 57 (1, 2, 4-5, 6); 58 (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 37
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LOCKSS Archive
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Preserved
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2026-04-06
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1 to 50
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Portico
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Preserved
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2026-04-09
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Preserved : 1976: 8(1-6), 1977: 9(1-6), 1978: 10(1-6), 1979: 11(1-6), 1980: 12(1-6), 1981: 13(1-6), 1982: 14(1-6), 1983: 15(1-6), 1984: 16(1-6), 1985: 17(1-6), 1986: 18(1-6), 1987: 19(1-6), 1988: 20(1-6), 1989: 21(1-6), 1990: 22(1-6), 1991: 23(1-6), 1992: 24(1-6), 1993: 25(1-6), 1994: 26(1-6), 1995: 27(1-6), 1996: 28(1-6), 1997: 29(5)
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Portico
|
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Preserved
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2026-04-09
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Preserved : 2005: 37(6), 2006: 38(3-4), 2007: 39(1-2, 5-6), 2008: 40(3-6), 2009: 41(1-6), 2010: 42(1-6), 2011: 43(1-6), 2012: 44(1-3, 6), 2013: 45(1-4, 6), 2014: 46(1-5), 2015: 47(3-6), 2016: 48(1-6), 2017: 49(1-6), 2018: 50(1-6), 2019: 51(1-6), 2019/2020: 52(1-6), 2021: 53(1-6), 2022: 54(1-6), 2023: 55(1-6), 2024: 56(1-6), 2025: 57(1-2), 2026: 58(1)
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LOCKSS Archive
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In Progress
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2026-04-06
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|
|
51
|
|
|
Portico
|
|
Preserved
|
2026-04-09
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|
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Preserved : 1970: 1(1-6), 1971: 2(1-6), 1972: 3(1-6), 1973: 4(1-6), 1973: 5(1-3), 1974/1975: 6(1-6), 1975: 7(1-6)
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CLOCKSS Archive
|
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Preserved
|
2026-04-06
|
|
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1 to 58
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|
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Library of Congress
|
|
Preserved
|
2025-04-07
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|
|
49 (3, 5, 6); 50 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 5-6); 55 (1 to 6); 56 (1 to 5)
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National Digital Preservation Program, China
|
|
Preserved
|
2025-10-23
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|
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Preserved : 3 (1 to 6); 4 (1 to 6); 5 (1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 3, 5); 39 (1 to 5); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1, 3 to 6); 46 (1 to 6); 47 (1-2, 3 to 6); 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 4, 5-6); 55 (1 to 6); 56 (1 to 6)
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|
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National Digital Preservation Program, China
|
|
Preserved
|
2025-12-04
|
|
|
Preserved : 3 (1 to 6); 4 (1 to 6); 5 (1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 3, 5); 39 (1 to 5); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1, 3 to 6); 46 (1 to 6); 47 (1-2, 3 to 6); 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 4, 5-6); 55 (1 to 6); 56 (1 to 6)
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National Library of the Netherlands
|
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Preserved
|
2024-12-15
|
|
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Preserved : 29 (2-6); 30 (1-6); 31 (1-6); 32 (1-6); 33 (1-6); 34 (1-6); 35 (1-6); 36 (1-6); 37 (1-6); 38 (1, 2, 3-4, 5-6); 39 (1-4, 5-6); 40 (1-6); 41 (1-6); 42 (1-6); 43 (1-6); 44 (1-6); 45 (1-2, 3-6); 46 (1-6); 47 (1-2, 3-6); 48 (1-6); 49 (1-5); 50 (1-6); 51 (1-5)
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