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LOCKSS Archive
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In Progress
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2026-02-09
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15 to 32, 50
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LOCKSS Archive
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Preserved
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2026-02-09
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33 to 49
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CLOCKSS Archive
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In Progress
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2026-02-09
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33 to 50
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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 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 (, 1 to 6); 15 (, 1 to 6); 16 (, 1 to 6); 17 (, 1 to 6); 18 (, 1 to 6); 19 (, 1 to 6); 20 (, 1 to 6); 21 (, 1 to 6); 22 (, 1 to 3 to 5, 6); 23 (, 1 to 6); 24 (, 1 to 6); 25 (, 1 to 8); 26 (, 1 to 8); 27 (, 1 to 8); 28 (, 1 to 6); 29 (, 1 to 6); 30 (, 1 to 6); 31 (, 1 to 6); 32 (, 1 to 6); 33 (, 1 to 6); 34 (, 1 to 8); 35 (, 1 to 8); 36 (, 1 to 8); 37 (, 1 to 8); 38 (, 1 to 8); 39 (, 1 to 8); 40 (, 1 to 8); 41 (, 1 to 8); 42 (, 1 to 8); 43 (, 1 to 8); 44 (, 1 to 8); 45 (, 1 to 8); 46 (, 1 to 8); 47 (, 1 to 12); 48 (, 1 to 8, 10 to 12); 49 (, 1 to 12); 50 (, 1 to 3); 1976; 1977; 1978; 1979; 1980; 1981; 1982; 1983; 1984; 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
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Internet Archive
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Preserved
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2025-08-08
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5 to 21
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Portico
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Preserved
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2026-02-12
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Preserved : 1976: 1(1-4), 1977: 2(1-4), 1978: 3(1-4), 1979: 4(1-4), 1980: 5(1-4), 1981: 6(1-6), 1982: 7(1-6), 1983: 8(1-6), 1984: 9(1-6), 1985: 10(1-6), 1986: 11(1-6), 1987: 12(1-6), 1988: 13(1-6), 1989: 14(1-6), 1990: 15(1-6), 1991: 16(1-6), 1992: 17(1-6), 1993: 18(1-6), 1994: 19(1-6), 1995: 20(1-6), 1996: 21(1-6), 1997: 22(1-6), 1998: 23(1-6), 1999: 24(1-6), 2000: 25(1-8), 2001: 26(1-8), 2002: 27(1-8), 2003: 28(1-6), 2004: 29(1-6), 2005: 30(1-6), 2006: 31(1-6), 2007: 32(1-6), 2008: 33(1-6), 2009: 34(1-8), 2010: 35(1-8), 2011: 36(1-8), 2012: 37(1-8), 2013: 38(1-8), 2014: 39(1-8), 2015: 40(1-8), 2016: 41(1-8), 2017: 42(1-8), 2018: 43(1-8), 2019: 44(1-8), 2020: 45(1-8), 2021: 46(1-8), 2022: 47(1-12)
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CLOCKSS Archive
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Preserved
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2026-02-09
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16 to 47
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Portico
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Preserved
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2026-02-12
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Preserved : 1976: 1(1-4), 1977: 2(1-4), 1978: 3(1-4), 1979: 4(1-4), 1980: 5(1-4), 1981: 6(1-6), 1982: 7(1-6), 1983: 8(1-6), 1984: 9(1-6), 1985: 10(1-6), 1986: 11(1-6), 1987: 12(1-6), 1988: 13(1-6), 1989: 14(1-6), 1990: 15(1-6), 1991: 16(1-6), 1992: 17(1, S 1, 2-6), 1993: 18(1-6), 1994: 19(1-6), 1995: 20(1-6), 1996: 21(1-6), 1997: 22(1-6), 1998: 23(1-6), 1999: 24(1-6), 2000: 25(1-8), 2001: 26(1-8), 2002: 27(1-8), 2003: 28(1, S 1, 2-6), 2004: 29(1-6), 2005: 30(1-6), 2006: 31(1-6), 2007: 32(1-6), 2008: 33(1-6), 2009: 34(1-8), 2010: 35(1-8), 2011: 36(1, S 1, 2, S 2, 3-8), 2012: 37(1, S 1, 2-8), 2013: 38(1-8), 2014: 39(1-8), 2015: 40(1-8), 2016: 41(1-8), 2017: 42(1-8), 2018: 43(1-8), 2019: 44(1-8), 2020: 45(1-8), 2021: 46(1-8), 2022: 47(1-12), 2023: 48(1-12), 2024: 49(1-12), 2025: 50(1-12), 2026: 51(1-2)
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National Library of the Netherlands
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Preserved
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2024-12-15
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Preserved : 31 (1-6); 32 (1, 2, 4-6)
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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 : 3 (1 to 6); 4 (1 to 8); 22 (1 to 6); 23 (1 to 6); 24 (1 to 6); 25 (1 to 8); 26 (1 to 8); 27 (1 to 8); 28 (, 1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 8); 35 (1 to 8); 36 (, 1 to 8); 37 (, 1 to 8); 38 (1 to 8); 39 (1 to 8); 41 (1 to 8); 42 (1 to 8); 43 (1 to 8); 44 (1 to 8); 45 (1 to 8); 46 (1 to 8); 47 (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 : 3 (1 to 6); 4 (1 to 8); 22 (1 to 6); 23 (1 to 6); 24 (1 to 6); 25 (1 to 8); 26 (1 to 8); 27 (1 to 8); 28 (, 1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 8); 35 (1 to 8); 36 (, 1 to 8); 37 (, 1 to 8); 38 (1 to 8); 39 (1 to 8); 41 (1 to 8); 42 (1 to 8); 43 (1 to 8); 44 (1 to 8); 45 (1 to 8); 46 (1 to 8); 47 (1 to 9, 11, 12)
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