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Portico
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Preserved
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2026-02-12
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Preserved : 1964: 1(1-4), 1965: 2(1-4), 1966: 3(1-5), 1967: 4(1, S 1, 2-6), 1968: 5(1-3, S 3, 4, S 4, 5-6), 1969: 6(1-5, S 5, 6, S 6, S 7, S 8, S 9, S 10), 1970: 7(1-6, S 11, S 12), 1971: 8(1-6, S 13, S 14, S 15, S 16), 1972: 9(1-6, S 17), 1973: 10(1-5), 1973: 11(1-5, S 18, S 19), 1974: 12(1-5), 1974: 13(1-5, S 20, S 21, S 22), 1975: 14(1-5), 1975: 15(1-5, S 23, S 24), 1976: 16(1-5), 1976: 17(1-5, S 25, S 26, S 27, S 28, S 29), 1977: 18(1-5), 1977: 19(1-5, S 30, S 31, S 32), 1978: 20(1-5), 1978: 21(1-5, S 33), 1979: 22(1-5), 1979: 23(1-5, S 34), 1980: 24(1-5, S 35, S 36, S 37), 1981: 25(1-5, S 38), 1981: 26(1-5), 1981: 27(1-5), 1982: 28(1-5), 1982: 29(1-5), 1983: 30(1-5), 1983: 31(1-5, S 39), 1984: 32(1-5), 1984: 33(1-5, S 40, S 41), 1985: 34(1-5, S 42, S 43), 1985: 35(1-5), 1986: 36(1-5, S 44, S 45, S 46), 1986: 37(1-3, 5)
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 0; 37 (4); 38 (, 1 to 5); 39 (, 1 to 5); 40 (, 1 to 5); 41 (, 1 to 5); 42 (, 1 to 5); 43 (, 1 to 5); 44 (, 1 to 5); 45 (, 1 to 5); 46 (, 1 to 5); 47 (, 1 to 5); 48 (, 1 to 5); 49 (, 1 to 5); 50 (, 1 to 5); 51 (, 1 to 5); 52 (, 1 to 5); 53 (, 1 to 5); 54 (, 1 to 5); 55 (, 1 to 5); 56 (, 1‐2, 3 to 5); 57 (, 1 to 5); 64 (, 1 to 6); 65 (, 1 to 6); 66 (, 1 to 6); 67 (, 1 to 4, 5-6); 68 (, 1 to 6); 69 (, 1 to 4, 5-6); 70 (, 1 to 6); 71 (, 1 to 6); 72 (, 1 to 6); 73 (, 1 to 6); 74 (, 1 to 6); 75 (, 1 to 6); 76 (, 1 to 6); 77 (, 1 to 6); 78 (, 1 to 6); 79 (, 1 to 6); 80 (, 1 to 6); 81 (, 1 to 6); 82 (, 1 to 6); 83 (, 1 to 6); 84 (, 1 to 6); 85 (, 1 to 6); 86 (, 1 to 6); 87 (, 1 to 6); 88 (, 1 to 6); 89 (, 1 to 6); 90 (, 1 to 6); 91 (, 1 to 6); 92 (, 1 to 6); 93 (, 1 to 6); 94 (, 1 to 6); 95 (, 1 to 6); 96 (, 1 to 6); 97 (, 1 to 6); 98 (, 1 to 6); 99 (, 1 to 6); 100 (, 1 to 6); 101 (, 1 to 6); 102 (, 1 to 6); 103 (, 1 to 6); 104 (, 1 to 6); 105 (, 1 to 6); 106 (, 1 to 6); 107 (, 1 to 6); 108 (, 1 to 6); 109 (, 1 to 6); 110 (, 1 to 6); 111 (, 1 to 6); 112 (, 1 to 6); 113 (, 1 to 6); 114 (, 1 to 6); 115 (, 1, 2); 1986; 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 1996; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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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 : 76 (1-6); 77 (1-6); 78 (1-6); 79 (s68, 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, 40, 46 to 116
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Portico
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Preserved
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2026-02-12
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Preserved : 1986: 37(4), 1987: 38(1-5, S 47), 1987: 39(1-5), 1988: 40(1-5), 1988: 41(1-5), 1989: 42(1-5, S 48), 1989: 43(1-5, S 49, S 50, S 51), 1990: 44(1-5), 1990: 45(1-5, S 52, S 53), 1991: 46(1-5), 1991: 47(1-5), 1992: 48(1-5), 1992: 49(1-5), 1993: 50(1-5), 1993: 51(1-5, S 54), 1994: 52(1-5, S 55), 1994: 53(1-5), 1995: 54(1-5, S 56), 1995: 55(1-5), 1996: 56(1-5, S 57), 1996: 57(1-5, S 58, S 59, S 60), 1997: 58(1-5), 1997: 59(1-5, S 62), 1998: 60(1-5), 1998: 61(1-5), 1999: 62(1-5), 1999: 63(1-5), 2000: 64(1-5), 2000: 65(1-6), 2001: 66(1-6), 2001: 67(1-4), 2002: 68(1-6), 2002: 69(1-4), 2003: 70(1-6), 2003: 71(1-6), 2004: 72(1-6), 2004: 73(1-6), 2005: 74(1-6), 2005: 75(1-6), 2006: 76(1-6), 2006: 77(1-6), 2007: 78(1-6), 2007: 79(1-6), 2008: 80(1-6), 2008: 81(1-6), 2009: 82(1-6), 2009: 83(1-6), 2010: 84(1-6), 2010: 85(1-6), 2011: 86(1-6), 2011: 87(1-6), 2012: 88(1-6), 2012: 89(1-6), 2013: 90(1-6, s73), 2013: 91(1-6), 2014: 92(1-6, s74), 2014: 93(1-6, s75-s76), 2015: 94(1-6, s77), 2015: 95(1-6, S78, S79, S80, S81), 2016: 96(1-6, S82), 2016: 97(1-6, S83, S84), 2017: 98(1-6, S85, S86), 2017: 99(1-6, S87), 2018: 100(1, S1, 2-6), 2018: 101(1-6), 2019: 102(1-6), 2019: 103(1-6), 2020: 104(1-6), 2020: 105(1-6), 2021: 106(1-6), 2021: 107(1-6), 2022: 108(1-6), 2022: 109(1-6), 2023: 110(1-6), 2023: 111(1-6), 2024: 112(1-6), 2024: 113(1-6), 2025: 114(1-6), 2025: 115(1-6), 2026: 116(1-3)
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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); 6 (S61, 1 to 5); 7 (1 to 6); 8 (, 1 to 6); 9 (, 1 to 6); 11 (1 to 6); 12 (1 to 3, 5, 6); 13 (1 to 6); 14 (1 to 6); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6); 19 (1 to 6); 58 (1 to 5); 59 (S62, 1 to 5); 61 (S63, 1 to 5); 62 (1 to 5); 63 (1 to 5); 64 (1 to 6); 65 (1 to 6); 66 (1 to 6); 67 (1 to 4, 5?6); 68 (1 to 6); 69 (1 to 4, 5?6); 71 (1 to 6); 72 (1 to 6); 73 (, 1 to 6); 74 (1 to 6); 75 (, 1 to 6); 76 (1 to 6); 77 (1 to 6); 78 (, 1 to 6); 79 (, 1 to 6); 81 (1 to 6); 82 (, 1 to 6); 83 (1 to 6); 84 (1 to 6); 85 (, 1 to 6); 86 (1 to 6); 87 (1 to 6); 88 (1 to 6); 89 (1 to 6); 91 (1 to 6); 92 (, 1 to 6); 93 (, 1 to 6); 94 (, 1 to 6); 95 (, 1 to 6); 96 (, 1 to 6); 97 (, 1 to 6); 98 (, 1 to 6); 99 (, 1 to 6); 111 (1 to 6); 112 (1 to 4, 6); 113 (1 to 6); 114 (1 to 6); 115 (2 to 4)
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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); 6 (S61, 1 to 5); 7 (1 to 6); 8 (, 1 to 6); 9 (, 1 to 6); 11 (1 to 6); 12 (1 to 3, 5, 6); 13 (1 to 6); 14 (1 to 6); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6); 19 (1 to 6); 58 (1 to 5); 59 (S62, 1 to 5); 61 (S63, 1 to 5); 62 (1 to 5); 63 (1 to 5); 64 (1 to 6); 65 (1 to 6); 66 (1 to 6); 67 (1 to 4, 5?6); 68 (1 to 6); 69 (1 to 4, 5?6); 71 (1 to 6); 72 (1 to 6); 73 (, 1 to 6); 74 (1 to 6); 75 (, 1 to 6); 76 (1 to 6); 77 (1 to 6); 78 (, 1 to 6); 79 (, 1 to 6); 81 (1 to 6); 82 (, 1 to 6); 83 (1 to 6); 84 (1 to 6); 85 (, 1 to 6); 86 (1 to 6); 87 (1 to 6); 88 (1 to 6); 89 (1 to 6); 91 (1 to 6); 92 (, 1 to 6); 93 (, 1 to 6); 94 (, 1 to 6); 95 (, 1 to 6); 96 (, 1 to 6); 97 (, 1 to 6); 98 (, 1 to 6); 99 (, 1 to 6); 111 (1 to 6); 112 (1 to 6); 113 (1 to 6); 114 (1 to 6); 115 (2 to 4)
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