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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); 2; 3; 4; 5; 7; 8; 12; 13; 14; 21; 23; 24 (4); 26 (2); 27 (1-4); 28; 29 (2-4); 30 (4); 31 (1-2, 3, 4); 32 (1-4); 33 (2-4); 34 (1-4); 36 (2, 4); 37 (2 to 4); 38 (2, 4); 39 (1-2, 3, 4); 40 (2, 3-4); 41 (1 to 4); 42 (1 to 4); 43 (1, 2, 3-4); 44 (1, 2-3, 4); 45 (1, 2-3); 46 (4)
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Internet Archive
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Preserved
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2025-08-08
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1 to 6
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Portico
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Preserved
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2026-05-14
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Preserved : 1974: 1(1), 1975: 2(1), 1976: 3(1), 1977: 4(1), 1978: 5(1), 1979: 6(1), 1980: 7(1), 1981: 8(1), 1982: 9(1), 1983: 10(1), 1984: 11(1-4), 1985: 12(1), 1986: 13(1), 1987: 14(1), 1988: 15(1), 1989: 16(1), 1990: 17(1-4), 1991: 18(1), 1992: 19(1), 1993: 20(1, 4), 1994: 21(1-4), 1995: 22(1), 1996: 23(1-4), 1997: 24(1, 3-4), 1998: 25(1), 1999: 26(1-4), 2000: 27(1-4), 2001: 28(1-4), 2002: 29(1-4), 2003: 30(1, 3-4), 2004: 31(1, 3-4), 2005: 32(1-4), 2006: 33(1-4), 2007: 34(1-4), 2008: 35(1-3)
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Portico
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Preserved
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2026-05-14
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Preserved : 2009: 36(4), 2010: 37(1-2, 4), 2011: 38(1-4), 2012: 39(1-4), 2013: 40(1-4), 2014: 41(1-4), 2015: 42(1-4), 2016: 43(1-4), 2017: 44(1-4), 2018: 45(1-4), 2019: 46(1-4), 2020/2021: 47(1-4), 2022: 48(1-4), 2022/2023: 49(1-4), 2024: 50(1-4), 2024/2025: 51(1-4), 2025: 52(1-4), 2026: 53(1)
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Library of Congress
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Preserved
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2025-04-07
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1; 2 (1); 3 (1); 4 (1); 5 (1); 7 (1); 8 (1); 11 (4); 12 (1); 13 (1); 14 (1); 21 (1-4); 23 (1-4); 27 (1-4); 28 (1-4); 29 (2-4); 32 (1-4); 33 (1); 34 (1-4); 46 (1, 2-3, 4); 47 (1-2, 3, 4); 48 (1 to 3-4); 49 (1, 2-4); 50 (1-2, 3-4); 51 (1)
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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 : 1 (1); 2; 3; 4; 5; 6; 7; 8 (2); 9 (1); 10; 12; 13; 14; 16; 18; 19; 21; 22; 23; 24 (3, 4); 25 (1); 26 (2-4); 27 (1); 28; 29 (2); 30 (1, 3, 4); 31 (1, 3); 32 (1); 33 (2); 34 (1); 36 (2-4); 37 (1-4); 38 (1-4)
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