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Portico
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Preserved
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2026-02-12
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Preserved : 1969: 1(1-4), 1970: 2(1-4), 1971: 3(1‐4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1972: 4(1-6), 1973: 5(1-6), 1974: 6(1-6), 1975: 7(1-6), 1976: 8(1-6), 1977: 9(1-5), 1977: 10(1-5), 1978: 11(1-5), 1978: 12(1-5), 1979: 13(1-5), 1979: 14(1-5), 1980: 15(1-5), 1980: 16(1-5), 1981: 17(1-5), 1981: 18(1-5), 1982: 19(1-5), 1982: 20(1-5), 1983: 21(1-5), 1983: 22(1-5), 1984: 23(1-6), 1984: 24(1-6), 1985: 25(1-6), 1985: 26(1-6), 1986: 27(1-6), 1986: 28(1-6), 1987: 29(1-6), 1987: 30(1-6), 1988: 31(1-6), 1988: 32(1-6), 1989: 33(1-6), 1989: 34(1-6), 1990: 35(1-6), 1990: 36(1-6), 1991: 37(1-6), 1991: 38(1-6), 1992: 39(1-6), 1992: 40(1-6), 1993: 41(1-6), 1993: 42(1-6), 1994: 43(1-6), 1994: 44(1-6), 1995: 45(1-6), 1995: 46(1-6), 1996: 47(1-6), 1996: 48(1-6)
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CLOCKSS Archive
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Preserved
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2026-02-09
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37 to 66
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 53 (2 to 6); 54 (, 1, 2, 4 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 (, 1 to 6); 64 (, 1 to 6); 65 (, 1 to 6); 66 (, 1 to 6); 1999; 2000; 2001; 2002; 2003; 2004; 2005
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Portico
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Preserved
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2026-02-12
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Preserved : 1997: 49(1-6), 1997: 50(1-6), 1998: 51(1-6), 1998: 52(1-6), 1999: 53(1-6), 1999: 54(1-6)
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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 : 5 (1 to 6); 6 (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 (1 to 6); 64 (1 to 6); 65 (1 to 6); 66 (, 1 to 6)
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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 6); 6 (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 (1 to 6); 64 (1 to 6); 65 (1 to 6); 66 (, 1 to 6)
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