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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 56 (1, 2); 59 (, 5); 62 (, 5); 63 (, 4, 5); 70 (, 5); 71 (, 1, 3 to 5); 72 (, 1, 2, 5, 6); 73 (, 1 to 6); 74 (, 1 to 6); 75 (, 1 to 4, 6); 76 (, 2); 77 (, 1, 3 to 5); 78 (, 1 to 6); 79 (, 1 to 5); 2001; 2004; 2007; 2008; 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 : 1969: 24(1-4), 1970: 25(1-4), 1971: 26(1-5), 1972: 27(1-4), 1973: 28(1-4), 1974: 29(1-4), 1975: 30(1-6), 1976: 31(1-6), 1977: 32(1-6), 1978: 33(1-6), 1979: 34(1-6), 1980: 35(1-6), 1981: 36(1-6), 1982: 37(1-6), 1983: 38(1-6), 1984: 39(1-6), 1985: 40(1-6), 1986: 41(1-6), 1987: 42(1-6), 1988: 43(1-6), 1989: 44(1-6), 1990: 45(1-6), 1991: 46(1-6), 1992: 47(1-6), 1993: 48(1-6), 1994: 49(1-6), 1995: 50(1-6), 1996: 51(1-6), 1997: 52(1-6), 1998: 53(1-6), 1999: 54(1-6), 2000: 55(1-6), 2001: 56(1-6), 2002: 57(1-6), 2003: 58(1-6), 2004: 59(1-6), 2005: 60(1-6), 2006: 61(1-6), 2007: 62(1-6), 2008: 63(1-6), 2009: 64(1-6), 2010: 65(1-6), 2011: 66(1-6), 2012: 67(1-6), 2013: 68(1-6), 2014: 69(1-6), 2015: 70(1-6), 2016: 71(1-6), 2017: 72(1-6), 2018: 73(1-6), 2019: 74(1-6), 2020: 75(1-6), 2021: 76(1-6), 2022: 77(1-6), 2023: 78(1-6), 2024: 79(1-2, 4-6), 2025: 80(1-6)
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 79 (6); 80 (, 1 to 4); 2024; 2025
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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 6); 5 (1 to 6); 6 (1 to 6); 7 (1 to 6); 24 (1 to 4); 25 (1 to 4); 26 (1 to 5); 27 (1 to 4); 28 (1 to 4); 29 (1 to 4); 31 (1-2, 3 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 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 to 6); 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 6); 56 (1 to 6); 57 (1 to 6); 58 (1, 6); 59 (1 to 6); 61 (1 to 6); 62 (1 to 6); 63 (1 to 6); 64 (1 to 6); 65 (1 to 6); 66 (1 to 6); 67 (1 to 6); 68 (1 to 6); 69 (1 to 6); 71 (1 to 6); 72 (1 to 6); 73 (1 to 6); 74 (1 to 6); 75 (1 to 6); 76 (1 to 6); 77 (1 to 6); 78 (1 to 5)
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Library of Congress
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Preserved
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2025-04-07
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24 (1, 2); 25 (1 to 4); 27 (1 to 4); 33 (5); 47 (5, 6); 50 (1 to 6); 53 (4, 6); 55 (1 to 6); 56 (3 to 6); 57 (1 to 6); 58 (1 to 6); 63 (5); 72 (6); 73 (1); 75 (6); 77 (3 to 6); 78 (1 to 6); 79 (1 to 5)
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