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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (2 to 6); 2 (1 to 6); 3 (1 to 6); 4 (1 to 6); 5 (1 to 6); 6 (1 to 6); 7 (1 to 6); 8 (1 to 6); 9 (1 to 6); 10 (1 to 6); 11 (1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 6); 15 (1 to 6); 16 (1 to 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, 6); 33 (1 to 6); 34 (1); 35 (2 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 6); 40 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 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 8); 55 (1 to 8); 56 (Suppl, 1 to 8); 57 (Suppl, 1 to 9); 58 (Suppl, 1 to 9); 59 (1 to 8); 60 (1 to 8); 61 (1)
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Internet Archive
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Preserved
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2025-08-08
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5 to 40
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CLOCKSS Archive
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Preserved
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2026-04-06
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1 to 61
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Portico
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Preserved
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2026-04-02
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Preserved : 1976: 11(5)
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Portico
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Preserved
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2026-04-02
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Preserved : 1985: 20(6)
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Portico
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Preserved
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2026-04-02
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Preserved : 1988: 23(3)
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Portico
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Preserved
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2026-04-02
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Preserved : 1994: 29(1, 3)
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Portico
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Preserved
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2026-04-02
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Preserved : 1997: 32(6), 1998: 33(5-6)
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Portico
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Preserved
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2026-04-02
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Preserved : 2006: 41(4, 6), 2007: 42(2), 2008: 43(1-2, 4)
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Portico
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Preserved
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2026-04-02
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Preserved : 2011: 46(6), 2012: 47(6), 2013: 48(1-4, 6), 2014: 49(1-5), 2015: 50(1-6), 2016: 51(1-6), 2017: 52(1-6), 2018: 53(1-6), 2019/2020: 54(1-8), 2020: 55(1-8), 2021: 56(1, S 1, 2-8), 2022: 57(1-2, S 2, 3-9), 2023: 58(1, S 1, 2, S 2, 3-9), 2024: 59(1-8), 2025/2026: 60(1-8), 2026: 61(1)
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LOCKSS Archive
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In Progress
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2026-04-06
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47, 54
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LOCKSS Archive
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Preserved
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2026-04-06
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48 to 53
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Library of Congress
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Preserved
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2025-04-07
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53 (S1, 1, S2, 2 to 6); 54 (1 to 8); 55 (1 to 8); 56 (1, S1, 2 to 8); 57 (1, S1, S2, 2 to 9); 58 (S1, 1, 2, S2, 3 to 9); 59 (1 to 3)
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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 6); 5 (1 to 6); 32 (1); 33 (2 to 4, 6); 34 (1); 35 (2 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1, 2, 5, 6); 46 (1 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (Suppl 2, 1 to 6); 54 (1 to 8); 55 (1 to 8); 56 (Suppl 1, 1 to 8); 57 (Suppl 2, 1 to 9); 58 (Suppl 1, 1 to 5); 59 (1 to 7)
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National Digital Preservation Program, China
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Preserved
|
2025-12-04
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Preserved : 4 (1 to 6); 5 (1 to 6); 32 (1); 33 (2 to 4, 6); 34 (1); 35 (2 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1, 2, 5, 6); 46 (1 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (Suppl 2, 1 to 6); 54 (1 to 8); 55 (1 to 8); 56 (Suppl 1, 1 to 8); 57 (Suppl 2, 1 to 9); 58 (Suppl 1, 1 to 5); 59 (1 to 7)
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National Digital Preservation Program, China
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Preserved
|
2025-10-23
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|
|
Preserved : 43 (1, 2); 45 (3 to 6); 46 (1 to 3)
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|
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National Digital Preservation Program, China
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|
Preserved
|
2025-12-04
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|
|
Preserved : 43 (1, 2); 45 (3 to 6); 46 (1 to 3)
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National Library of the Netherlands
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Preserved
|
2024-12-15
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Preserved : 32 (6); 33 (5, 6); 35 (5, 6); 36 (1-6); 37 (1-6); 38 (1-6); 39 (1-6); 40 (1-6); 41 (1, 2, 4-6); 42 (1-3, 5, 6); 43 (1-6); 44 (1-6); 45 (1-5); 46 (1-6); 47 (1-6); 48 (1-6); 49 (1-6); 50 (1-6); 51 (1-6); 52 (1-6); 53 (supplement-1, 1-6); 54 (1-5)
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