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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1, 2, 3-4); 2 (, 1 to 4); 3 (, 1 to 4); 4 (, 1, 2-3, 4); 5 (, 1-2, 3, 4); 6 (, 1, 2-3, 4); 7 (, 1 to 4); 8 (, 1, 2-3, 4); 14 (, 1-3, 4-6); 15 (, 1 to 6); 16 (, 1 to 4, 5-6); 17 (, 1-2, 3 to 6); 18 (, 1-3, 4 to 6); 19 (, 1 to 6); 20 (, 1, 2, 3-4, 5, 6); 21 (, 1); 22 (, 1, 2, 3-4, 5-6); 23 (, 1); 24 (, 1 to 3, 4-5, 6-7, 8 to 10); 25 (, 1 to 6); 26 (, 1 to 6); 27 (, 1 to 4, 5-6); 28 (, 1, 2-3, 4-5, 6); 29 (, 1 to 6); 30 (, 1, 2, 3-4, 5, 6); 31 (, 1 to 4, 5-6); 32 (, 1, 2-3, 4-5, 6); 33 (, 1 to 6); 34 (, 1 to 6); 35 (, 1 to 3, 4-5, 6); 36 (, 1, 2-3, 4-5, 6); 37 (, 1 to 6); 38 (, 1 to 6); 39 (, 1 to 6); 40 (, 1-3, 4 to 6); 41 (, 1 to 6); 42 (, 1-2, 3 to 6); 43 (, 1 to 5, 6-7, 8 to 12); 44 (, 1 to 12); 45 (, 1 to 6, 7-8, 9 to 12); 46 (, 1-2, 3 to 12); 47 (, 1 to 12); 48 (, 1 to 12); 49 (, 1-2, 3 to 12); 50 (, 1 to 5, 10 to 12); 51 (, 1 to 12); 52 (, 1 to 12); 53 (, 1 to 8, 10 to 12); 54 (, 1 to 9, 11, 12); 55 (, 1 to 12); 56 (, 1, 4 to 12); 57 (, 1, 3 to 12); 58 (, 1 to 12); 59 (, 1 to 12); 60 (, 1 to 12); 61 (, 1 to 12); 62 (, 1 to 12); 63 (, 1 to 8); 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979; 1985; 1986; 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 1996; 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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CLOCKSS Archive
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Preserved
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2026-02-09
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ahead-of-print to 64
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Portico
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Preserved
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2026-02-12
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Preserved : 1977: 6(1, 4), 1978: 7(1-4), 1979: 8(1, 4), 1980: 9(1-6), 1981: 10(1, 6), 1982: 11(1-4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1983: 12(6), 1984: 13(1-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1986: 15(1-6), 1987: 16(1-4), 1988: 17(3-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1989: 18(4-6), 1990: 19(1-6), 1991: 20(1-2, 5-6), 1992: 21(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1993: 22(1-2), 1994: 23(1, sup1), 1995: 24(1-3), 1996: 25(1-6), 1996: 26(1-6), 1997: 27(1-6), 1997: 28(1-6), 1998: 29(1-6), 1998: 30(1-6), 1999: 31(1-6), 1999: 32(1-6), 1999/2000: 33(1-6), 2000: 34(1-6), 2001: 35(1-6), 2001: 36(1-6), 2002: 37(1-6), 2002/2003: 38(1-6), 2003: 39(1-6), 2003: 40(1-6), 2004: 41(1-6), 2004: 42(1-6), 2005: 43(1-5), 2006: 44(1-12), 2007: 45(1-12), 2008: 46(1-2, sup1, 3-12), 2009: 47(1-12), 2010: 48(1, S 1, 2-12), 2011: 49(1-12), 2012: 50(1-12), 2013: 51(1-12), 2014: 52(1-12), 2015: 53(1-12), 2016: 54(1-12), 2017: 55(1-12), 2018: 56(1-12), 2019: 57(1-12), 2020: 58(1-12), 2021: 59(1-12), 2022: 60(1-12), 2023: 61(1-12), 2024: 62(1-12), 2025: 63(1-12), 2026: 64(1-2)
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 62
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CLOCKSS Archive
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Preserved
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2026-02-09
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46 to 53, 55
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LOCKSS Archive
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In Progress
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2026-02-09
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63
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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 (2, 3-4, 5, 6); 4 (1-3, 4 to 6); 5 (sup1, 1 to 9, 11, 12); 6 (1 to 9, 11, 12); 27 (sup1, 1 to 4, 5-6); 28 (1, 2-3, 4-5, 6); 29 (sup1, 1 to 6); 31 (1 to 4, 5-6); 32 (1, 2-3, 4-5, 6); 33 (sup1, 1 to 6); 34 (1 to 6); 35 (1 to 3, 4-5, 6); 36 (1, 2-3, 4-5, 6); 37 (sup1, 1 to 6); 38 (1 to 6); 39 (1 to 6); 41 (1 to 6); 42 (1-2, 3 to 6); 43 (sup1, 1 to 5, 6-7, 8, 9, 11, 12); 44 (sup1, 1 to 9, 11, 12); 45 (sup1, 1 to 6, 7-8, 9, 11, 12); 46 (sup1, 1-2, 3 to 9, 11, 12); 47 (1 to 9, 11, 12); 48 (sup1, 1 to 9, 11, 12); 49 (1-2, 3 to 9, 11, 12); 51 (1 to 9, 11, 12); 52 (sup1, 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); 61 (1 to 9, 11, 12); 62 (1 to 9, 11, 12); 63 (1 to 3, 5)
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Library of Congress
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Preserved
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2025-04-07
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48 (sup1, 1 to 12); 49 (1-2, 3 to 12); 50 (sup1, 1 to 12); 51 (1 to 12); 52 (sup1, 1 to 12); 53 (1 to 12); 54 (1 to 12); 55 (1 to 12); 56 (1 to 12); 57 (1 to 7, 9 to 12); 58 (1 to 12); 59 (1 to 12); 60 (1 to 12); 61 (1 to 12); 62 (1 to 12)
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