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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 (S1); 9 (1); 10; 11; 12; 13; 14; 15; 16; 17; 18; 19; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33 (2); 34 (1, 2); 35 (1, 2); 36 (s1, 1, 2); 37 (1, 2); 38 (1, 2); 39 (1 to 3); 40 (sup1, 1 to 3); 41 (1 to 4, 12); 42 (sup1, 1 to 4); 43 (sup1, 1 to 4); 44 (1 to 4); 45 (S1, 1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 50 (1)
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LOCKSS Archive
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Preserved
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2026-04-27
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28 to 41
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Portico
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Preserved
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2026-04-23
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Preserved : 2004: 28(1), 2005: 29(1), 2006: 30(1), 2007: 31(1), 2008: 32(1), 2009: 33(1-2), 2010: 34(1-2), 2011: 35(1-2), 2012: 36(1, S 1, 2), 2013: 37(1-2), 2014: 38(1-2), 2015: 39(1-3), 2016: 40(1, S 1, 2-3), 2017: 41(1-4), 2018: 42(1, S 1, 2-4)
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Portico
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Preserved
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2026-04-23
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Preserved : 2019: 43(4), 2020: 44(1-4), 2021: 45(1, S 1, 2-4), 2022: 46(2)
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Portico
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Preserved
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2026-04-23
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Preserved : 2023: 47(1-4), 2024: 48(1-3), 2025: 49(1)
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LOCKSS Archive
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Preserved
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2026-04-27
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1 to 48
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CLOCKSS Archive
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Preserved
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2026-04-27
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ahead-of-print to 49
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LOCKSS Archive
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In Progress
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2026-04-27
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49, 50
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Portico
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Preserved
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2026-04-23
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Preserved : 1983: 7(1), 1984: 8(1), 1985: 9(1), 1986: 10(1), 1987: 11(1), 1988: 12(1), 1989: 13(1), 1990: 14(1), 1991: 15(1), 1992: 16(1), 1993: 17(1), 1994: 18(1), 1995: 19(1), 1996: 20(1), 1997: 21(1), 1998: 22(1), 1999: 23(1), 2000: 24(1), 2001: 25(1), 2002: 26(1), 2003: 27(1), 2004: 28(1), 2005: 29(1), 2006: 30(1), 2007: 31(1), 2008: 32(1), 2009: 33(1-2), 2010: 34(1-2), 2011: 35(1-2), 2012: 36(1-2), 2013: 37(1-2), 2014: 38(1-2), 2015: 39(1-3), 2016: 40(1-3), 2017: 41(1-4), 2018: 42(1-4), 2019: 43(1-4), 2020: 44(1-4), 2021: 45(1-4), 2022: 46(1-4), 2023: 47(1-4), 2024: 48(1-4), 2025: 49(1-4), 2026: 50(1)
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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; 4 (sup1, 1 to 3); 21 (1); 22; 23; 24; 25; 26; 27; 28; 29; 31; 32; 33 (2); 34 (1, 2); 35 (1, 2); 36 (sup1, 1, 2); 37 (1, 2); 38 (1, 2); 39 (1 to 3); 41 (sup1, 1 to 4); 42 (sup1, 1 to 4); 43 (sup1, 1 to 4); 44 (1 to 4); 45 (S1, 1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1)
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Library of Congress
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Preserved
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2025-04-07
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41 (sup1, 2 to 4); 42 (sup1, 1 to 4); 43 (sup1, 1 to 4); 44 (1 to 4); 45 (S1, 1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4)
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