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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (3, 5 to 9, 11, 12); 2 (1, 4, 6 to 8, 10); 3 (1 to 3, 5, 7, 8, 11, 12); 4 (3 to 6, 9, 11, 12); 5 (1 to 4, 6, 7, 9, 10); 6 (3, 4, 6, 7, 10 to 12); 7 (1, 2, 5 to 9, 11); 8 (1, 2, 4, 5, 7, 9, 11, 12); 9 (1, 3 to 7, 12); 10 (1 to 5, 7 to 9, 11, 12); 11 (1 to 4, 6 to 8, 10, 11); 12 (2, 4, 6 to 12); 13 (2 to 6, 8, 10, 12); 14 (1 to 3, 5 to 12); 15 (2 to 12); 16 (1, 4, 5, 7 to 11); 17 (2 to 6, 8, 10, 12); 18 (1_suppl, 2, 3, 5); 19 (1_suppl, 3, 4, 6); 20 (1_suppl, 3, 5); 21 (1 to 4); 22 (1 to 4); 23 (2 to 4); 25 (1 to 3); 26 (1 to 4); 27 (1_suppl, 2); 28 (1, 3, 4); 29 (1, 2); 30 (1, 2, 4); 31 (2, 4); 32 (1, 5, 6); 33 (1 to 3, 5); 34 (1 to 4, 6); 35 (2 to 6); 36 (2 to 5); 37 (1 to 3); 38 (2 to 6); 39 (2 to 4, 6); 40 (2, 4, 5); 41 (2, 3); 42 (2 to 4); 43 (1 to 3); 44 (1 to 6); 45 (1_suppl, 2 to 6); 46 (1 to 6); 47 (1 to 6); 48 (1 to 4); 49 (1 to 4); 50 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 3); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 60 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (1 to 4); 68 (1 to 4); 69 (1 to 4); 70 (1 to 4); 71 (1)
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Portico
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Preserved
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2026-04-02
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Preserved : 2011: 56(2-4), 2012: 57(1-4), 2013: 58(1)
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Portico
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Preserved
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2026-04-02
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Preserved : 1956: 1(1-12), 1957: 2(1-12), 1958: 3(1-12), 1959: 4(1-12), 1960: 5(1-12), 1961: 6(1-12), 1962: 7(1-12), 1963: 8(1-12), 1964: 9(1-12), 1965: 10(1-12), 1966: 11(1-12), 1967: 12(1-12), 1968: 13(1-12), 1969: 14(1-12), 1970: 15(1-12), 1971: 16(1-12), 1972: 17(1-12), 1973: 18(1, 1, S, 2-6), 1974: 19(1, 1, S, 2-6), 1975: 20(1, 1, S, 2-6), 1976: 21(1-4), 1977: 22(1, 1, S, 2-4), 1978: 23(1-4), 1979: 24(1-4), 1980: 25(1-4), 1981: 26(1, 1, S, 2-4), 1982: 27(1, 1, S, 2-4), 1983: 28(1-4), 1984: 29(1-4), 1985: 30(1-4), 1986: 31(1-2, 4), 1987: 32(1-6), 1988: 33(1-6), 1989: 34(1-6), 1990: 35(1-6), 1991: 36(1-6), 1992: 37(1-6), 1993: 38(1, 1, S, 2-6), 1994: 39(1-6), 1995: 40(1-6), 1996: 41(1-6), 1997: 42(1-6), 1998: 43(1-6), 1999: 44(1-6), 2000: 45(1, 1, S, 2-6), 2001: 46(1-6), 2002: 47(1-6), 2003: 48(1-4), 2004: 49(1-4), 2005: 50(1-4), 2006: 51(1-4), 2007: 52(1-4), 2008: 53(1-4), 2009: 54(1-4), 2010: 55(1-3), 2011: 56(1-4), 2012: 57(1-4), 2013: 58(1-4), 2014: 59(1-4), 2015: 60(1-4), 2016: 61(1-4), 2017: 62(1-4), 2018: 63(1-4), 2019: 64(1-4), 2020: 65(1-4), 2021: 66(1, 3-4), 2022: 67(1-4), 2023: 68(1-4), 2024: 69(1-4), 2025: 70(1-4), 2026: 71(1)
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CLOCKSS Archive
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In Progress
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2026-04-06
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45 to 57, 61 to 71
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LOCKSS Archive
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In Progress
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2026-04-06
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45 to 48, 70, 71
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LOCKSS Archive
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Preserved
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2026-04-06
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49 to 69
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CLOCKSS Archive
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Preserved
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2026-04-06
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58 to 60
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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 4); 6 (1 to 4); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 to 6); 48 (1 to 4); 49 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 3); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4)
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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 : 3 (11); 5 (6); 6 (3); 7 (5); 8 (1, 8); 9 (1); 11 (10, 12); 13 (8, 11); 17 (5); 21 (1); 22; 25 (4); 28 (1); 30; 33 (3, 5); 37 (2); 38 (1); 39 (6); 41 (4); 44 (6); 45; 46 (5, 6); 47 (1, 6); 51 (1-4); 53 (1-4); 54 (3); 55 (1, 3); 56 (1-4); 57 (1-4); 58 (1-4); 59 (1-4); 60 (1-4); 61 (1-4); 62 (1-4); 63 (1-4); 64 (1-4)
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British Library
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Preserved
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2019-09-18
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Preserved : 59 (1 to 4), 60 (1 to 4), 61 (1 to 4), 62 (1 to 4), 63 (1 to 3)
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