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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 to 4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 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 (sup1, 1 to 6); 15 (1 to 6); 16 (1 to 6); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 20 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (1, 2, 3-4); 24 (1 to 4); 25 (1-2, 3, 4); 26 (1 to 4); 27 (1-3, 4); 28 (1, 2, 4, 5-6); 29 (1 to 4, 5-6); 30 (1, 2-3, 4 to 6); 31 (1 to 4, 5-6); 32 (1 to 6); 33 (1-2, 3 to 6); 34 (1 to 4, 5–6); 35 (sup1, 1 to 4, 5-6); 36 (sup1, 1 to 6); 37 (sup1, 1 to 6); 38 (1 to 6); 39 (sup1, 1 to 6); 40 (1 to 6); 41 (sup1, 1 to 6); 42 (1 to 6); 43 (sup1, 1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (sup1, 1 to 6); 47 (1 to 4, 5-6); 48 (sup1, 1, 3 to 6); 49 (1 to 6); 50 (1)
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Portico
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Preserved
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2026-04-09
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Preserved : 1990: 10(4)
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Portico
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Preserved
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2026-04-09
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Preserved : 1992: 12(1)
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Portico
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Preserved
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2026-04-09
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Preserved : 1996: 16(3)
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Portico
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Preserved
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2026-04-09
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Preserved : 2001: 25(1)
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Portico
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Preserved
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2026-04-09
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Preserved : 2008: 32(2, 4)
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Portico
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Preserved
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2026-04-09
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Preserved : 2009: 33(1-2, 5-6), 2010: 34(1-6), 2011: 35(S 1, 2-6), 2012: 36(S 1, 2-6), 2013: 37(1, S 1, 2-6), 2014: 38(1-6), 2014/2015: 39(1, S 1, 2-4)
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LOCKSS Archive
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Preserved
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2026-04-06
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1 to 22, 24 to 48
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CLOCKSS Archive
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Preserved
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2026-04-06
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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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2026-04-06
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23, 49, 50
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Portico
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Preserved
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2026-04-09
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Preserved : 1992: 12(1-4)
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Portico
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Preserved
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2026-04-09
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Preserved : 1993: 13(1-4), 1994: 14(1-4), 1995: 15(1-4), 1996: 16(1-4)
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Portico
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Preserved
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2026-04-09
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Preserved : 1997: 17(1-4), 1997: 18(1-4), 1998: 19(1-4), 1998: 20(1-4), 1999: 21(1-4), 1999: 22(1-4), 2000: 23(1-4), 2000: 24(1-4), 2001: 25(1-4), 2001/2002: 26(1-4), 2002: 27(1-4), 2002/2004: 28(1-2, 4-6), 2005: 29(1-6), 2006: 30(1-6), 2007: 31(1-6), 2008: 32(1-6), 2009: 33(1-6), 2010: 34(1-4), 2011: 35(1-4), 2012: 36(1-6), 2013: 37(1-6), 2014: 38(1-6), 2015: 39(1-6), 2016: 40(1-6), 2017: 41(1-6), 2018: 42(1-6), 2019: 43(1-6), 2020: 44(1-6), 2021: 45(1-6), 2022: 46(1, sup1, 1, 2-6), 2023: 47(1-6), 2024: 48(1, sup1, 1, 2-6), 2025: 49(1-6), 2026: 50(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 (2 to 4); 3 (1, 2-3, 4 to 6); 4 (1 to 6); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (1, 2, 3-4); 24 (1 to 4); 25 (1-2, 3, 4); 26 (1 to 4); 27 (1-3, 4); 28 (1, 2, 4, 5-6); 29 (1 to 4, 5-6); 31 (1 to 4, 5-6); 32 (1 to 6); 33 (1-2, 3 to 6); 34 (1 to 4, 5-6); 35 (sup1, 1 to 4, 5-6); 36 (sup1, 1 to 6); 37 (sup1, 1 to 6); 38 (1 to 6); 39 (sup1, 1 to 6); 41 (sup1, 1 to 6); 42 (1 to 6); 43 (sup1, 1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (sup1, 1 to 6); 47 (1 to 4, 5-6); 48 (sup1, 1 to 6); 49 (1, 3)
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