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Portico
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Preserved
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2026-05-07
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Preserved : 2007/2008: 37(1-4), 2008: 38(1-4), 2009: 39(1-4), 2010: 40(1-4), 2011: 41(1-4), 2012: 42(1-4), 2013: 43(1-4), 2014: 44(1-3), 2015: 45(1-4)
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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (1, 2, 3/4, 5 to 8); 2 (1 to 7, 8/9, 10); 3 (1 to 6, 7/8, 9, 10); 4 (1 to 5, 6/7, 8/9, 10); 5 (1 to 3, 5 to 10); 6 (1 to 10); 7 (1 to 10); 8 (1 to 7, 8-10); 9 (1 to 7, 8/9, 10); 10 (1, 2, 3/4, 5, 6/7, 8/9, 10); 11 (1 to 8); 12 (1 to 6); 13 (1, 2/3, 4/5, 6); 14 (1, 2, 3/4, 5, 6); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 3, 4/5, 6); 19 (1 to 3, 4/5, 6); 20 (1, 2, 3/4, 5/6); 21 (1 to 4); 22 (1/2, 3, 4); 23 (1, 2, 3/4); 24 (1 to 4); 25 (1 to 4); 26 (1, 2, 3/4); 27 (1, 2, 3/4); 28 (1, 2, 3/4); 29 (1, 2/3, 4); 30 (1, 2, 3/4); 31 (1, 2, 3/4); 32 (1, 2, 3/4); 33 (1, 2, 3/4); 34 (1 to 4); 35 (1 to 4); 36 (1, 2/3, 4); 37 (1 to 4); 38 (1, 2/3, 4); 39 (1/2, 3/4); 40 (1 to 4); 41 (1 to 4); 42 (1, 2, 3-4); 43 (1-2, 3, 4); 44 (1 to 3); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 50 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1, 2, 3-4); 54 (2 to 4); 55 (1, 2, 3-4)
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Internet Archive
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Preserved
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2025-08-08
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1 to 45
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LOCKSS Archive
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Preserved
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2026-05-04
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1 to 54
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CLOCKSS Archive
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Preserved
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2026-05-04
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37 to 47
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LOCKSS Archive
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In Progress
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2026-05-04
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55
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Portico
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Preserved
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2026-05-07
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Preserved : 1969/1970: 1(1-8), 1970/1971: 2(1-10), 1971/1972: 3(1-10), 1972/1973: 4(1-10), 1973/1974: 5(1-10), 1974/1975: 6(1-10), 1975/1976: 7(1-10), 1976/1977: 8(1-10), 1977/1978: 9(1-10), 1978/1979: 10(1-10), 1979/1980: 11(1-8), 1981: 12(1-6), 1982: 13(1-6), 1983: 14(1-6), 1984: 15(1-6), 1985: 16(1-6), 1986: 17(1-6), 1987: 18(1-6), 1988: 19(1-6), 1989: 20(1-6), 1990/1991: 21(1-4), 1992: 22(1-4), 1993: 23(1-4), 1994: 24(1-4), 1995: 25(1-4), 1996: 26(1-4), 1997: 27(1-4), 1998: 28(1-4), 1999: 29(1-4), 2000: 30(1-4), 2001: 31(1-4), 2002: 32(1-4), 2003: 33(1-4), 2004: 34(1-4), 2005/2006: 35(1-4), 2006: 36(1-4), 2007/2008: 37(1-4), 2008: 38(1-4), 2009: 39(1-4), 2010: 40(1-4), 2011: 41(1-4), 2012: 42(1-4), 2013: 43(1-4), 2014: 44(1-3), 2015: 45(1-4), 2016: 46(1-4), 2017: 47(1-4), 2018: 48(1-4), 2019: 49(1-4), 2020: 50(1-4), 2021: 51(1-4), 2022: 52(1-4), 2023: 53(1-4), 2024: 54(1-4), 2025: 55(1-4)
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CLOCKSS Archive
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Preserved
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2026-05-04
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1 to 51, 53, 55
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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, 2, 3-4); 4 (1 to 4); 5 (1 to 4); 27 (1, 2, 3-4); 28 (1, 2, 3-4); 29 (1, 2-3, 4); 31 (1, 2, 3-4); 32 (1, 2, 3-4); 33 (1, 2, 3-4); 34 (1 to 4); 35 (1 to 4); 36 (1, 2-3, 4); 37 (1 to 4); 38 (1, 2-3, 4); 39 (1-2, 3-4); 41 (1 to 4); 42 (1, 2, 3-4); 43 (1-2, 3, 4); 44 (1 to 3); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1, 2, 3-4); 54 (1 to 4); 55 (2)
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Library of Congress
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Preserved
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2025-04-07
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40 (1 to 4); 41 (1 to 4); 42 (1 to 3-4); 43 (1-2, 3, 4); 44 (1 to 3); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 50 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 3-4); 54 (1 to 3)
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