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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); 2 (1, 2); 3 (1, 2); 4 (1, 2); 5 (1, 2); 6 (1, 2); 7 (1, 2); 8 (1, 2); 9 (1, 2); 10 (1, 2); 11 (1); 12; 13; 14; 15; 16; 17; 18; 19; 20; 21; 22; 23; 24; 25 (2, 3); 26 (1 to 3); 27 (1 to 3); 28 (1 to 3); 29 (1-3); 31 (2-3); 32 (1 to 3); 33 (1, 2-3); 34 (1 to 3); 35 (1 to 3); 36 (1 to 3); 37 (1)
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Portico
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Preserved
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2026-04-30
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Preserved : 2002: 16(1), 2003: 17(1), 2004: 18(1), 2005: 19(1), 2006: 20(1), 2007: 21(1), 2008: 22(1), 2009: 23(1), 2010: 24(1), 2011: 25(1-2), 2012: 26(1-3), 2014: 27(1-3), 2015: 28(1-3), 2016: 29(Issue), 2017: 30(1-3), 2018: 31(1-3), 2019: 32(1), 2020: 33(1-3), 2021: 34(1-3), 2022: 35(1-3), 2023: 36(1-2), 2024: 37(1-2)
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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 29, 31 to 36
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LOCKSS Archive
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Preserved
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2026-04-27
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1 to 36
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LOCKSS Archive
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In Progress
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2026-04-27
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37
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Portico
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Preserved
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2026-04-30
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Preserved : 1987: 1(1-2), 1988: 2(1-2), 1989: 3(1-2), 1990: 4(1-2), 1991: 5(1-2), 1992: 6(1-2), 1993: 7(1-2), 1994: 8(1-2), 1995: 9(1-2), 1996: 10(1-2), 1997: 11(1), 1998: 12(1-2), 1999: 13(1), 2000: 14(1), 2001: 15(1), 2002: 16(1), 2003: 17(1), 2004: 18(1), 2005: 19(1), 2006: 20(1), 2007: 21(1), 2008: 22(1), 2009: 23(1), 2010: 24(1), 2011: 25(1-3), 2012: 26(1-3), 2014: 27(1-3), 2015: 28(1-3), 2016: 29(1-3), 2017: 30(1-3), 2018: 31(1-3), 2019: 32(1-3), 2020: 33(1-3), 2021: 34(1-3), 2022: 35(1-3), 2023: 36(1-3), 2024: 37(1-2)
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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 : 2 (1); 3; 11; 12; 13; 14; 15; 16; 17; 18; 19; 21; 22; 23; 24; 25 (2, 3); 26 (1 to 3); 27 (1 to 3); 28 (1 to 3); 29 (1-3); 31 (2-3); 32 (1 to 3); 33 (1, 2-3); 34 (1 to 3); 35 (1 to 3); 36 (1, 2)
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Library of Congress
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Preserved
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2025-04-07
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24 (1); 25 (1 to 3); 26 (1 to 3); 27 (1 to 3); 28 (1 to 3); 29 (1-3); 30 (1-3); 31 (1, 2-3); 32 (1 to 3); 33 (1, 2-3); 34 (1 to 3); 35 (1 to 3); 36 (1, 2)
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