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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 6); 3 (1 to 6); 4 (1 to 6); 5 (1 to 6); 6 (1 to 6); 7 (1 to 6); 8 (1 to 4); 9 (1 to 4); 10 (1 to 4); 11 (1 to 4); 12 (1 to 4); 13 (1 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 20 (1 to 4); 21 (1/2, 3, 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1, 2/3, 4); 26 (1 to 4); 27 (1 to 4); 28 (1 to 4); 29 (1 to 4); 30 (1 to 4); 31 (1 to 4); 32 (1 to 4); 33 (1, 2/3, 4); 34 (1 to 4); 35 (1 to 4); 36 (1, 2/3, 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 40 (1/2, 3, 4); 41 (1 to 4); 42 (1, 2/3, 4); 43 (1 to 4); 44 (1 to 4); 45 (1/2, 3, 4); 46 (1 to 4); 47 (1/2, 3, 4); 48 (1 to 4); 49 (1 to 4); 50 (1, 2/3, 4); 51 (1/2, 3, 4); 52 (1 to 4); 53 (1 to 4); 54 (1, 2-4, 3-4); 55 (1, 2/4); 56 (1 to 4); 57 (1/2, 3, 4); 58 (1, 2/3, 4); 59 (1 to 4); 60 (1 to 4); 61 (1 to 4); 62 (1/2, 3-4); 63 (1-4); 64 (2 to 4); 65 (1/2, 3, 4); 66 (1/2, 3, 4); 67 (1 to 4); 68 (1, 2/3, 4); 69 (1/2, 3, 4); 70 (1, 2/3, 4); 71 (1, 2/3, 4); 72 (1/2, 3/4); 73 (1 to 4); 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 (Suppl, 1 to 6)
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Internet Archive
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Preserved
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2025-08-08
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18 to 67
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Portico
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Preserved
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2026-04-16
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Preserved : 1977: 1(1-6), 1978/1981: 2(1-6), 1979/1981: 3(1-6), 1980: 4(1-6), 1981: 5(1-6), 1982: 6(1-6), 1983: 7(1-6), 1984/1997: 8(1-4), 1984: 9(1-4), 1985: 10(1-4), 1985: 11(1-4), 1986: 12(1-4), 1986: 13(1-4), 1987: 14(1-4), 1987: 15(1-4), 1988: 16(1-4), 1988: 17(1-4), 1989: 18(1-4), 1989: 19(1-4), 1990: 20(1-4), 1990: 21(1-4), 1990: 22(1-4), 1991: 23(1-4), 1991: 24(1-4), 1991: 25(1-4), 1992: 26(1-4), 1992: 27(1-4), 1992: 28(1-4), 1993: 29(1-4), 1993: 30(1-4), 1993: 31(1-4), 1994: 32(1-4), 1994: 33(1-4), 1994: 34(1-4), 1995: 35(1-4), 1995: 36(1-4), 1995: 37(1-4), 1996: 38(1-4), 1996: 39(1-4), 1996: 40(1-4), 1997: 42(2-3)
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CLOCKSS Archive
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Preserved
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2026-04-13
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1 to 91
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Portico
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Preserved
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2026-04-16
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Preserved : 2000: 52(3-4), 2001: 53(4), 2001: 54(2-4), 2001: 55(1-4), 2002: 56(3), 2002: 57(4), 2002: 58(1)
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Portico
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Preserved
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2026-04-16
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Preserved : 2004: 60(1-2), 2004: 61(1), 2005: 62(1-4), 2005: 63(1-4)
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Portico
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Preserved
|
2026-04-16
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Preserved : 2006: 65(4), 2006: 66(1-4), 2006: 67(1-4), 2007: 68(1, 4), 2007: 69(4), 2007: 70(1-4), 2008: 71(1-4), 2008: 72(1-4), 2008: 73(1-4), 2009: 74(1-6), 2010: 75(1-6), 2011: 76(1-6), 2012: 77(2-4, 6), 2013: 78(1-6), 2014: 79(1-6), 2015: 80(2-6), 2016: 81(1-6), 2017: 82(1-6), 2018: 83(1-6), 2019: 84(1-6), 2018/2019/2020: 85(1-6), 2021: 86(1-6), 2022: 87(1, S 1, 2, S 2, 3, S 3, 4, S 4, 5-6), 2023: 88(1, S 1, 2-6), 2024: 89(1-6), 2025: 90(1-6), 2026: 91(1-2)
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LOCKSS Archive
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In Progress
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2026-04-13
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77, 84
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LOCKSS Archive
|
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Preserved
|
2026-04-13
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78 to 83
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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 : 8 (2, 3); 41 (1-4); 42 (1, 2, 4); 43 (1-4); 44 (1-4); 45 (1, 3, 4); 46 (1-4); 47 (3); 48 (1-4); 49 (1-4); 50 (1, 2, 4); 51 (1, 3, 4); 52 (1-4); 53 (1-4); 54 (1-3); 56 (2-4); 57 (1, 3, 4); 58 (1, 2, 4); 59 (1-4); 60 (1, 2, 4); 61 (1, 4); 62 (1-2, 3-4); 63 (1-4); 64 (2-4); 65 (1-2, 3, 4); 66 (1-2, 3, 4); 67 (1, 2, 4); 68 (1, 2-3, 4); 69 (1-2, 3, 4); 70 (1, 2-3, 4); 71 (1, 2-3, 4); 72 (1-2, 3-4); 73 (1-4); 74 (1-6); 75 (1-6); 76 (1-6); 77 (1-6); 78 (1-6); 79 (1-6); 80 (1-6); 81 (1-6); 82 (1-6); 83 (1-6); 84 (1-5)
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Library of Congress
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Preserved
|
2025-04-07
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83 (1 to 6); 84 (1 to 6); 85 (1 to 6); 86 (1 to 6); 87 (S1, 1, 2, S2, S3, 3, 4, S4, 5, 6); 88 (S1, 1 to 6); 89 (1 to 6); 90 (1)
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Scholars Portal
|
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Preserved
|
2026-03-19
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Preserved : 88 (Suppl, 1 to 6); 89 (1 to 6); 90 (1 to 6); 91 (1, 2)
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National Digital Preservation Program, China
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Preserved
|
2025-10-23
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Preserved : 5 (1, 2, 4); 6 (1 to 4); 7 (1, 2, 4); 8 (1 to 6); 41 (1 to 4); 42 (1, 2, 4); 43 (1 to 4); 44 (1 to 4); 45 (1, 3, 4); 46 (1 to 4); 47 (1, 3, 4); 48 (1 to 4); 49 (1 to 4); 51 (1, 3, 4); 52 (1 to 4); 53 (1 to 4); 54 (1, 2); 55 (1, 2); 56 (1 to 4); 57 (1, 3, 4); 58 (1, 2, 4); 59 (1 to 4); 61 (1 to 4); 62 (1, 3); 63 (1); 64 (2 to 4); 65 (1, 3, 4); 66 (1, 3, 4); 67 (1 to 4); 68 (1, 2, 4); 69 (1, 3, 4); 71 (1, 2, 4); 72 (1, 3); 73 (1 to 4); 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 (Suppl 3, 1 to 6); 88 (Suppl 1, 1 to 6); 89 (1 to 6)
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National Digital Preservation Program, China
|
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Preserved
|
2025-12-04
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Preserved : 5 (1, 2, 4); 6 (1 to 4); 7 (1, 2, 4); 8 (1 to 6); 41 (1 to 4); 42 (1, 2, 4); 43 (1 to 4); 44 (1 to 4); 45 (1, 3, 4); 46 (1 to 4); 47 (1, 3, 4); 48 (1 to 4); 49 (1 to 4); 51 (1, 3, 4); 52 (1 to 4); 53 (1 to 4); 54 (1, 2); 55 (1, 2); 56 (1 to 4); 57 (1, 3, 4); 58 (1, 2, 4); 59 (1 to 4); 61 (1 to 4); 62 (1, 3); 63 (1); 64 (2 to 4); 65 (1, 3, 4); 66 (1, 3, 4); 67 (1 to 4); 68 (1, 2, 4); 69 (1, 3, 4); 71 (1, 2, 4); 72 (1, 3); 73 (1 to 4); 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 (Suppl 3, 1 to 6); 88 (Suppl 1, 1 to 6); 89 (1 to 6)
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