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Portico
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Preserved
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2026-02-12
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Preserved : 1974: 1(1-6), 1975: 2(1-6), 1976: 3(1-6), 1977: 4(1-6), 1978: 5(1-12), 1979: 6(1-12), 1980: 7(1-12), 1981: 8(1-12), 1982: 9(1-12), 1983: 10(1-12), 1984: 11(1-12), 1985: 12(1-12)
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 30 (1 to 12); 32 (, 1 to 12); 33 (, 1 to 12); 34 (, 1 to 12); 35 (, 1 to 12); 36 (, 1 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); 44 (, 1 to 4, 6 to 12); 45 (, 1 to 12); 46 (, 1 to 12); 47 (, 2 to 12); 48 (, 1 to 12); 49 (, 1 to 12); 50 (, 1 to 12); 51 (, 1 to 12); 52 (, 1 to 12); 53 (, 1 to 12); 54 (, 1 to 12); 55 (, 1 to 12); 56 (, 1 to 12); 57 (, 1 to 12); 58 (, 1 to 12); 59 (, 1 to 12); 60 (, 1 to 7); 1995; 1997; 1998; 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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Internet Archive
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Preserved
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2025-08-08
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30 to 39
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 13, 16, 17, 19 to 23, 26 to 61
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Portico
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Preserved
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2026-02-12
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Preserved : 1995: 30(1-12), 1996: 31(1-12), 1997: 32(1-12), 1998: 33(1-12), 1999: 34(1-12), 2000: 35(1-12), 2001: 36(1-12), 2002: 37(1-12), 2003: 38(1-12), 2004: 39(1-12), 2005: 40(1-12), 2006: 41(1-12), 2007: 42(1-12), 2008: 43(1-12), 2009: 44(1-12), 2010: 45(1-12), 2011: 46(1-12), 2012: 47(1-12), 2013: 48(1-12), 2014: 49(1-12), 2015: 50(1-12), 2016: 51(1-12), 2017: 52(1-12), 2018: 53(1-12), 2019: 54(1-12), 2020: 55(1-12), 2021: 56(1-12), 2022: 57(1-12), 2023: 58(1-12), 2024: 59(1-12), 2025: 60(1-12), 2026: 61(1-3)
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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 9, 11, 12); 5 (1 to 9, 11, 12); 6 (1 to 9); 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 (1 to 9, 11, 12); 44 (1 to 9, 11, 12); 45 (1 to 9, 11, 12); 46 (1 to 9, 11, 12); 47 (1 to 9, 11, 12); 48 (1 to 9, 11, 12); 49 (1 to 9, 11, 12); 51 (1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (1 to 9, 11, 12); 54 (1 to 9, 11, 12); 55 (1 to 9, 11, 12); 56 (1 to 9, 11, 12); 57 (1 to 9, 11, 12); 58 (1 to 9, 11, 12); 59 (1 to 9, 11, 12)
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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 : 4 (1 to 9, 11, 12); 5 (1 to 9, 11, 12); 6 (1 to 9); 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 (1 to 9, 11, 12); 44 (1 to 9, 11, 12); 45 (1 to 9, 11, 12); 46 (1 to 9, 11, 12); 47 (1 to 9, 11, 12); 48 (1 to 9, 11, 12); 49 (1 to 9, 11, 12); 51 (1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (1 to 9, 11, 12); 54 (1 to 9, 11, 12); 55 (1 to 9, 11, 12); 56 (1 to 9, 11, 12); 57 (1 to 9, 11, 12); 58 (1 to 9, 11, 12); 59 (1 to 9, 11, 12)
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