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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 to 6); 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 (1-2, 3-4, 5-6, 7 to 12); 15 (1-2, 3 to 12); 16 (1-2, 3 to 7, 8-9, 10-11, 12); 17 (1-2, 3 to 12); 18 (1-2, 3 to 12); 19 (1-2, 3 to 6, 8 to 12); 20 (1-2, 3 to 12); 21 (1-2, 3 to 12); 22 (1-2, 3 to 12); 23 (1-2, 3 to 12); 24 (1-2, 3 to 11); 25 (1-2, 3 to 12); 26 (1-2, 3 to 12); 27 (1-2, 3 to 12); 29 (9); 30 (7); 32 (4, 18 to 23); 33 (1-2, 3 to 12); 34 (1-2, 3 to 12); 35 (1-2, 3 to 12); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 40 (1 to 4); 41 (1 to 4); 42 (1 to 6); 43 (1 to 7); 44 (1 to 5); 45 (1 to 6); 46 (1 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 50 (S3, 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 to 6); 59 (1 to 6); 60 (1 to 6); 61 (1 to 6); 62 (1 to 6); 63 (sup1, 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); 70 (1 to 6); 71 (1 to 6); 72 (1 to 6); 73 (1 to 6); 74 (1, 2)
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LOCKSS Archive
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Preserved
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2026-04-06
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1 to 72
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CLOCKSS Archive
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Preserved
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2026-04-06
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ahead-of-print, just-accepted to 74
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LOCKSS Archive
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In Progress
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2026-04-06
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73, 74
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Portico
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Preserved
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2026-04-02
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Preserved : 1952: 1(1-2)
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Portico
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Preserved
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2026-04-02
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Preserved : 1954: 2(1-2), 1955: 3(1-2), 1956: 4(1-2), 1957: 5(1-2), 1958: 6(1-2), 1959: 7(1-2), 1960: 8(1-2), 1961: 9(1-2), 1962: 10(1-2), 1963: 11(1-2), 1964: 12(1-2), 1965: 13(1-2)
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Portico
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Preserved
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2026-04-02
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Preserved : 1967: 15(1-2)
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Portico
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Preserved
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2026-04-02
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Preserved : 1968: 16(3-4), 1969: 17(3-4), 1970: 18(3), 1971: 19(3)
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Portico
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Preserved
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2026-04-02
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Preserved : 1972: 20(3), 1973: 21(3), 1974: 22(3), 1975: 23(3), 1976: 24(1-3), 1977: 25(3-12), 1978: 26(3-12), 1979: 27(3-12), 1980: 28(3-12), 1981: 29(3-12), 1982: 30(3-12), 1983: 31(3-12), 1984: 32(3-12), 1985: 33(3-12), 1986: 34(3-12), 1987: 35(3-12), 1988: 36(1-3), 1989: 37(1-3), 1990: 38(1-3), 1991: 39(1-3), 1992: 40(1-3), 1993: 41(1-3), 1994: 42(1-3), 1995: 43(1-3)
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Portico
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Preserved
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2026-04-02
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Preserved : 1996: 44(1-5), 1997: 45(1-5)
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Portico
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Preserved
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2026-04-02
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Preserved : 1998: 46(1-6), 1999: 47(1-6), 2000: 48(1-6), 2001: 49(1-6), 2002: 50(1-6), 2003: 51(1-6), 2004: 52(1-6), 2005: 53(1-6), 2006: 54(1-6), 2007: 55(1-6), 2008: 56(1-6), 2009: 57(1-6), 2010: 58(1-6), 2011: 59(1-6), 2012: 60(1-6), 2013: 61(1-6), 2014: 62(1-6), 2015: 63(1-6), 2016: 64(1-6), 2017: 65(1-6), 2018: 66(1-6), 2019: 67(1-6), 2020: 68(1-6), 2021: 69(1-6), 2022: 70(1-6), 2023: 71(1-6), 2024: 72(1-6), 2025: 73(1-6), 2026: 74(1-3)
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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 (S3, 1 to 6); 6 (1 to 6); 7 (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 to 6); 59 (1 to 6); 61 (1 to 6); 62 (1 to 6); 63 (sup1, 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, 2)
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