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Internet Archive
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Preserved
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2025-08-08
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1 to 13
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 35 (1 to 12); 36 (, 1 to 12); 37 (, 1 to 12); 38 (, 1 to 12); 39 (, 1 to 12); 40 (, 1 to 10); 41 (, 1 to 10); 42 (, 1 to 10); 43 (, 1 to 10); 44 (, 1 to 10); 45 (, 1 to 10); 46 (, 1 to 10); 47 (, 1 to 10); 48 (, 1 to 10); 49 (, 1 to 10); 50 (, 1 to 10); 51 (, 1 to 10); 52 (, 1 to 10); 53 (, 1 to 7, 9, 10); 54 (, 1 to 9); 55 (, 5 to 10); 56 (, 1 to 4, 6 to 8); 57 (, 1 to 5, 7 to 9); 58 (, 1 to 6, 8 to 10); 59 (, 1 to 3, 6 to 10); 60 (, 1 to 10); 61 (, 1 to 6, 8); 62 (, 1 to 4, 10); 63 (, 1 to 3); 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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Portico
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Preserved
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2026-02-12
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Preserved : 1964: 2(12), 1965: 3(12), 1966: 4(12)
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Portico
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Preserved
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2026-02-12
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Preserved : 1975: 13(1-9), 1976: 14(1-9), 1977: 15(1-2, 5-9), 1978: 16(1-9), 1979: 17(1-9), 1980: 18(1-9), 1981: 19(1-9), 1982: 20(1-9), 1983: 21(1, 3-9), 1984: 22(1-9), 1985: 23(1-9), 1986: 24(1-9), 1987: 25(1-9), 1988: 26(1-9), 1989: 27(1-9), 1990: 28(1-9), 1991: 29(1-9), 1992: 30(1-9), 1993: 31(1, 3-9), 1994: 32(1-9), 1995: 33(1-9), 1996: 34(1-9), 1997: 35(1-9), 1998: 36(1-10), 1999: 37(1-10), 2000: 38(1-10), 2001: 39(1-10), 2002: 40(1-10), 2003: 41(1, 3-10), 2004: 42(1-10), 2005: 43(1-10), 2006: 44(1-10), 2007: 45(1-10), 2008: 46(1-10), 2009: 47(1-10), 2010: 48(1-10), 2011: 49(1-10), 2012: 50(1-10), 2012/2013: 51(1-10), 2014: 52(1-10), 2014/2015: 53(1-10), 2015/2016: 54(1-10), 2016/2017: 55(1-10), 2018: 56(1-10), 2019: 57(1-10), 2020: 58(1-10), 2021: 59(1-10), 2022: 60(1-10), 2023: 61(1-10), 2024: 62(1-10), 2025: 63(1-10), 2026: 64(1-2)
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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
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LOCKSS Archive
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Preserved
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2026-02-09
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46 to 62
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CLOCKSS Archive
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In Progress
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2026-02-09
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54 to 63
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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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2025-10-23
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Preserved : ; 5 (1 to 9); 6 (1 to 9); 45 (1 to 9); 46 (1 to 9); 47 (1 to 9); 48 (1 to 9); 49 (1 to 9); 51 (1 to 9); 52 (1 to 9); 53 (1 to 9); 54 (1 to 9); 55 (1 to 9); 56 (1 to 9); 57 (1 to 9); 58 (1 to 9); 59 (1 to 3, 5 to 9); 61 (1 to 3, 6 to 9); 62 (1 to 9); 63 (1 to 8)
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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 : ; 5 (1 to 9); 6 (1 to 9); 45 (1 to 9); 46 (1 to 9); 47 (1 to 9); 48 (1 to 9); 49 (1 to 9); 51 (1 to 9); 52 (1 to 9); 53 (1 to 9); 54 (1 to 9); 55 (1 to 9); 56 (1 to 9); 57 (1 to 9); 58 (1 to 9); 59 (1 to 3, 5 to 9); 61 (1 to 3, 6 to 9); 62 (1 to 9); 63 (1 to 9)
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