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Internet Archive
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Preserved
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2026-07-13
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1 to 23
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Scholars Portal
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Preserved
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2026-06-02
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Preserved : 1 (1 to 4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 6); 5 (1 to 12); 6 (1 to 12); 7 (1 to 12); 8 (1 to 12); 9 (1 to 12); 10 (1 to 12); 11 (1 to 12); 12 (1 to 12); 13 (1 to 12); 14 (1 to 12); 15 (1 to 12); 16 (1 to 12); 17 (1 to 12); 18 (1 to 12); 19 (1 to 12); 20 (1 to 12); 21 (1 to 12); 22 (1 to 12); 23 (1 to 12); 24 (1 to 12); 25 (1 to 12); 26 (1 to 12); 27 (1 to 12); 28 (1 to 12); 29 (1 to 12); 30 (1 to 12); 31 (1 to 12); 32 (1 to 12); 33 (1 to 12); 34 (1 to 12); 35 (1 to 12); 36 (1 to 7, 9 to 12); 37 (1 to 12); 38 (1 to 12); 39 (1 to 12); 40 (1 to 12); 41 (1 to 12); 42 (1 to 12); 43 (1 to 12)
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Portico
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Preserved
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2026-07-16
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Preserved : 2011: 30(3-12)
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Portico
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Preserved
|
2026-07-16
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Preserved : 2016: 35(8)
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Portico
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Preserved
|
2026-07-16
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Preserved : 2021: 40(1)
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Portico
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Preserved
|
2026-07-16
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Preserved : 2025: 44(1-12), 2026: 45(1-7)
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Portico
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Preserved
|
2026-07-16
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Preserved : 1982: 1(1-4), 1983: 2(1-4), 1984: 3(1-4), 1985: 4(1-6), 1986: 5(1-12), 1987: 6(1-12), 1988: 7(1-12), 1989: 8(1-12), 1990: 9(1-12), 1991: 10(1-12), 1992: 11(1-12), 1993: 12(1-12), 1994: 13(1-12), 1995: 14(1-12), 1996: 15(1-12), 1997: 16(1-12), 1998: 17(1-12), 1999: 18(1-12), 2000: 19(1-12), 2001: 20(1-12), 2002: 21(1-12), 2003: 22(1-12), 2004: 23(1-12), 2005: 24(1-12), 2006: 25(1-12), 2007: 26(1-12), 2008: 27(1-12), 2009: 28(1-12), 2010: 29(1-12), 2011: 30(1-12), 2012: 31(1-12), 2013: 32(1-12), 2014: 33(1-12), 2015: 34(1-12), 2016: 35(1-12), 2017: 36(1-12), 2018: 37(1-12), 2019: 38(1-12), 2020: 39(1-12), 2021: 40(1-12), 2022: 41(1-12), 2023: 42(1-12), 2024: 43(1-12)
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CLOCKSS Archive
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Preserved
|
2026-07-06
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5, 10 to 43
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CLOCKSS Archive
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In Progress
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2026-07-06
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27 to 44
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LOCKSS Archive
|
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Preserved
|
2026-07-06
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27 to 44
|
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CLOCKSS Archive
|
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Preserved
|
2026-07-06
|
|
|
30, 44, 45
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LOCKSS Archive
|
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In Progress
|
2026-07-06
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45
|
|
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National Digital Preservation Program, China
|
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Preserved
|
2025-10-23
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Preserved : 2 (1 to 9, 11, 12); 3 (1 to 9, 11, 12); 4 (1 to 9, 11, 12); 16 (1 to 9, 11, 12); 17 (1 to 9, 11, 12); 18 (1 to 9, 11, 12); 19 (1 to 9, 11, 12); 21 (1 to 9, 11, 12); 22 (1 to 9, 11, 12); 23 (1 to 9, 11, 12); 24 (1 to 9, 11, 12); 25 (1 to 9, 11, 12); 26 (1 to 9, 11, 12); 27 (1 to 9, 11, 12); 28 (1 to 9, 11, 12); 29 (1 to 9, 11, 12); 31 (1 to 9, 11, 12); 32 (1 to 9, 11, 12); 33 (1 to 9, 11, 12); 34 (1 to 9, 11, 12); 35 (1 to 9, 11, 12); 36 (1 to 9, 11, 12); 37 (1 to 9, 11, 12); 38 (1 to 9, 11, 12); 39 (1 to 9, 11, 12); 41 (1 to 9, 11, 12); 42 (1 to 9, 11, 12); 43 (2 to 9, 11, 12)
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National Digital Preservation Program, China
|
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Preserved
|
2025-12-04
|
|
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Preserved : 2 (1 to 9, 11, 12); 3 (1 to 9, 11, 12); 4 (1 to 9, 11, 12); 16 (1 to 9, 11, 12); 17 (1 to 9, 11, 12); 18 (1 to 9, 11, 12); 19 (1 to 9, 11, 12); 21 (1 to 9, 11, 12); 22 (1 to 9, 11, 12); 23 (1 to 9, 11, 12); 24 (1 to 9, 11, 12); 25 (1 to 9, 11, 12); 26 (1 to 9, 11, 12); 27 (1 to 9, 11, 12); 28 (1 to 9, 11, 12); 29 (1 to 9, 11, 12); 31 (1 to 9, 11, 12); 32 (1 to 9, 11, 12); 33 (1 to 9, 11, 12); 34 (1 to 9, 11, 12); 35 (1 to 9, 11, 12); 36 (1 to 9, 11, 12); 37 (1 to 9, 11, 12); 38 (1 to 9, 11, 12); 39 (1 to 9, 11, 12); 41 (1 to 9, 11, 12); 42 (1 to 9, 11, 12); 43 (2 to 9, 11, 12)
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|
|
National Digital Preservation Program, China
|
|
Preserved
|
2025-10-23
|
|
|
Preserved : 3 (5); 4 (1); 44 (4 to 9)
|
|
|
National Digital Preservation Program, China
|
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Preserved
|
2025-12-04
|
|
|
Preserved : 3 (5); 4 (1); 44 (4 to 9, 11)
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|
|
Library of Congress
|
|
Preserved
|
2025-04-07
|
|
|
5; 24 (4); 26 (6); 29 (2); 31 (1); 33 (1, 7, 12); 34 (1 to 12); 35 (1 to 10); 36 (1 to 6, 9 to 12); 37 (1 to 9, 11); 38 (1 to 12); 39 (1 to 7, 9 to 12); 40 (1 to 12); 41 (1 to 12); 42 (1, 4, 8 to 11); 43 (4, 5)
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