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Portico
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Preserved
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2026-02-12
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Preserved : 1971/1972/1973: 1(1-4), 1973/1974: 2(1-4), 1975/1976: 3(1-4), 1977/1978: 4(1-4), 1979/1980: 5(1-4), 1981/1982: 6(1-4), 1982/1983/1984: 7(1-4), 1984/1985/1986: 8(1-4)
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 9 (1 to 4); 10 (, 1 to 4); 11 (, 1 to 4); 12 (, 1 to 6); 13 (, 1 to 6); 14 (, 1 to 6); 15 (, 1 to 6); 16 (, 1 to 3, 4-5, 6); 17 (, 1 to 6); 18 (, 1, 2-3, 4 to 6); 19 (, 1 to 6); 20 (, 1 to 6); 21 (, 1 to 8); 22 (, 1, 2/3, 4, 5/6, 7, 8); 23 (, 1 to 8); 24 (, 1 to 8); 25 (, 1 to 7); 26 (, 1 to 8); 27 (, 1 to 8); 28 (, 1 to 8); 29 (, 1 to 8); 30 (, 1 to 6); 31 (, 1 to 6); 32 (, 1 to 6); 33 (, 1 to 6); 34 (, 1 to 6); 35 (, 1 to 12); 36 (, 1 to 12); 37 (, 1 to 12); 38 (, 1 to 6); 39 (, 1 to 6); 40 (, 1 to 6); 41 (, 1 to 6); 42 (, 4 to 6); 43 (, 1 to 6); 44 (, 1 to 6); 45 (, 1); 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
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 49
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Portico
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Preserved
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2026-02-12
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Preserved : 1986/1987: 9(1-4), 1987: 10(1-4), 1988: 11(1-4), 1989: 12(1-6), 1990: 13(1-6), 1991: 14(1-6), 1992: 15(1-6), 1993: 16(1-6), 1994: 17(1-6), 1995: 18(1-6), 1996: 19(1-6), 1997: 20(1-6), 1998: 21(1-8), 1999: 22(1-8), 2000: 23(1-8), 2001/2002: 24(1-8), 2002/2003: 25(1-8), 2003/2004: 26(1-8), 2004/2005: 27(1-8), 2005/2006: 28(1-8), 2006/2007: 29(1-8), 2007/2008: 30(1-6), 2008: 31(1-6), 2009: 32(1-6), 2010: 33(1-6), 2011: 34(1-6), 2012: 35(1-9, 11-12), 2013: 36(1-10), 2014: 37(1-10, 12), 2015: 38(2-6), 2016: 39(1-6), 2017: 40(1-6), 2018: 41(1-6), 2019: 42(1-6), 2019/2020: 43(1-6), 2021: 44(1-6), 2022: 45(1)
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LOCKSS Archive
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In Progress
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2026-02-09
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35
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LOCKSS Archive
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Preserved
|
2026-02-09
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36 to 42
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 45 (2 to 6); 46 (, 1 to 6); 47 (, 1); 48 (, 1); 2022; 2023; 2024; 2025
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National Digital Preservation Program, China
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Preserved
|
2025-10-23
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Preserved : 2 (1 to 6); 3 (1 to 6); 4 (1 to 6); 21 (1 to 8); 22 (1, 2, 4, 5, 7, 8); 23 (1 to 8); 24 (1 to 8); 25 (1 to 7); 26 (1 to 8); 27 (1 to 8); 28 (1 to 8); 29 (1 to 8); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 9, 11, 12); 36 (1 to 9, 11, 12); 37 (1 to 9, 11, 12); 38 (1 to 6); 39 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1)
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National Digital Preservation Program, China
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Preserved
|
2025-12-04
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Preserved : 2 (1 to 6); 3 (1 to 6); 4 (1 to 6); 21 (1 to 8); 22 (1, 2, 4, 5, 7, 8); 23 (1 to 8); 24 (1 to 8); 25 (1 to 7); 26 (1 to 8); 27 (1 to 8); 28 (1 to 8); 29 (1 to 8); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 9, 11, 12); 36 (1 to 9, 11, 12); 37 (1 to 9, 11, 12); 38 (1 to 6); 39 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1)
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National Library of the Netherlands
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Preserved
|
2024-12-15
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Preserved : 19 (11); 21 (2-8); 22 (1, 2-3, 4, 5-6, 7, 8); 23 (1-8); 24 (1-8); 25 (1-6, 7-8); 26 (1-8); 27 (1-8); 28 (1-8); 29 (1-8); 30 (1-6); 31 (1-6); 32 (1-6); 33 (1-6); 34 (1-6); 35 (1-12); 36 (1-12); 37 (1-12); 38 (1-6); 39 (1-6); 40 (1-6); 41 (1-6); 42 (1-5)
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