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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 6); 4 (1 to 6); 5 (1 to 6); 6 (1 to 6); 7 (1 to 6); 8 (S1, 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 to 6); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (S1, 1 to 6); 19 (S3, 1 to 6); 20 (1 to 8); 21 (S1, 1 to 8); 22 (1 to 12); 23 (1 to 12); 24 (1 to 12); 25 (1 to 12); 26 (1 to 12); 27 (1 to 12); 28 (1 to 12); 29 (1 to 12); 30 (1 to 12); 31 (1 to 12); 32 (1 to 6, 8 to 12); 33 (1 to 12); 34 (S5, 1 to 10); 35 (1 to 12); 36 (1 to 12); 37 (1 to 12); 38 (1 to 12); 39 (S9, 1 to 12); 40 (1 to 12); 41 (1 to 12); 42 (S9, 1 to 12); 43 (1 to 12); 44 (S9, 1 to 12); 45 (1 to 6); 46 (1 to 12); 47 (1 to 6); 48 (1 to 12); 49 (none, 1 to 6); 50 (1 to 12); 51 (1 to 6); 52 (1 to 12); 53 (1 to 6); 54 (1 to 12); 55 (1 to 6); 56 (1 to 12); 57 (1 to 8); 58 (S2, 1 to 12); 59 (1 to 12); 60 (S10, 1 to 4, 6 to 12); 61 (1 to 12); 62 (S10, 1 to 12); 63 (S10, 1 to 12); 64 (S10, 1, 3 to 12); 65 (S10, 1 to 12)
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CLOCKSS Archive
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Preserved
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2026-04-13
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4 to 13, 21, 25, 27, 34 to 65
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Portico
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Preserved
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2026-04-23
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Preserved : 1958/1988: 1(1-6), 1959/1989: 2(1-6), 1960/1990: 3(1-6), 1961/1991: 4(1-6), 1962/1992: 5(1-6), 1963/1993: 6(1-6), 1964/1994: 7(1-6), 1965/1995: 8(1, S 1, 2-6), 1966/1996: 9(1-6), 1967: 10(1-6), 1968: 11(1-6), 1969: 12(1-6), 1970: 13(1-6), 1971: 14(1-6), 1972: 15(1-6), 1973: 16(1-6), 1974: 17(1-6), 1975: 18(1, S 1, 2-6), 1976: 19(1-3, S 3, 4-6), 1977: 20(1-8), 1978: 21(1, S 1, 2-8), 1979: 22(1-12), 1980: 23(1-12), 1981: 24(1-12), 1982: 25(1-12), 1983: 26(1-2, 4-12), 1984: 27(1-12), 1985: 28(1-12), 1986: 29(1-12), 1987: 30(1-12), 1988: 31(1-12), 1989: 32(1-6, 8-12), 1990: 33(1-12), 1991: 34(1-5, S 5, 6-12), 1992: 35(1-12), 1993: 36(1-12), 1994: 37(1-12), 1995: 38(1-12), 1996: 39(1-9, S 9, 10-12), 1997: 40(1-12), 1998: 41(1-12), 1999: 42(1-9, S 9, 10-12), 2000: 43(1-12), 2001: 44(1-9, S 9, 10-12), 2001: 45(1-6), 2002: 46(1-12), 2002: 47(1-6), 2003: 48(1-12), 2003: 49(1-5, S 5, 6), 2004: 50(1-12), 2004: 51(1-6), 2005: 52(1-12), 2005: 53(1-6), 2006: 54(1-12), 2006: 55(1-6), 2007: 56(1-12), 2007: 57(1-8), 2008: 58(1-2, S 2, 3-11), 2008: 59(1-11), 2009: 60(1-10, S 10, 10, 11-12), 2009: 61(1-12), 2010: 62(1-12), 2011: 63(1-10, S 10, S10, 11-12), 2012: 64(1-10, S 10, S10, 11-12), 2013: 65(1-10, S 10, 11-12)
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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 : 1 (1 to 6); 4 (1 to 9, 11, 12); 5 (1 to 9, 11, 12); 6 (S1, 1 to 9, 11, 12); 11 (1 to 6); 12 (1 to 6); 13 (1 to 6); 41 (1 to 9, 11, 12); 42 (S9, 1 to 9, 11, 12); 43 (S9, 1 to 9, 11, 12); 44 (S9, 1 to 9, 11, 12); 45 (1 to 6); 46 (1 to 9, 11, 12); 47 (1 to 6); 48 (1 to 9, 11, 12); 49 (S5, 1 to 6); 51 (1 to 6); 52 (1 to 9, 11, 12); 53 (1 to 6); 54 (1 to 9, 11, 12); 55 (1 to 6); 56 (1 to 9, 11, 12); 57 (1 to 8); 58 (S2, 1 to 9, 11, 12); 59 (1 to 9, 11, 12); 61 (1 to 9, 11, 12); 62 (S1, 1 to 9, 11, 12); 63 (S1, 1 to 9, 11, 12); 64 (S1, 1 to 9, 11, 12); 65 (S1, 1 to 9, 11, 12)
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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 : 1 (1 to 6); 4 (1 to 9, 11, 12); 5 (1 to 9, 11, 12); 6 (S1, 1 to 9, 11, 12); 11 (1 to 6); 12 (1 to 6); 13 (1 to 6); 41 (1 to 9, 11, 12); 42 (S9, 1 to 9, 11, 12); 43 (S9, 1 to 9, 11, 12); 44 (S9, 1 to 9, 11, 12); 45 (1 to 6); 46 (1 to 9, 11, 12); 47 (1 to 6); 48 (1 to 9, 11, 12); 49 (S5, 1 to 6); 51 (1 to 6); 52 (1 to 9, 11, 12); 53 (1 to 6); 54 (1 to 9, 11, 12); 55 (1 to 6); 56 (1 to 9, 11, 12); 57 (1 to 8); 58 (S2, 1 to 9, 11, 12); 59 (1 to 9, 11, 12); 61 (1 to 9, 11, 12); 62 (S1, 1 to 9, 11, 12); 63 (S1, 1 to 9, 11, 12); 64 (S1, 1 to 9, 11, 12); 65 (S1, 1 to 9, 11, 12)
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