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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (2 to 4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1, 2, 4); 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 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 4); 28 (1 to 4); 29 (1 to 6); 30 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 8); 40 (1 to 8); 41 (1 to 8); 42 (1_suppl, 2 to 7); 43 (1 to 8); 44 (1 to 8); 45 (1 to 9); 46 (1 to 9); 47 (1 to 9); 48 (1 to 9); 49 (1 to 7, 9, 10); 50 (1 to 10); 51 (1 to 10); 52 (1 to 10); 53 (1 to 10); 54 (1 to 10); 55 (1 to 10); 56 (1 to 8, 9-10); 57 (1 to 7, 8-9, 10); 58 (1, 2)
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Internet Archive
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Preserved
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2025-08-08
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1 to 46
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LOCKSS Archive
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Preserved
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2026-04-06
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1 to 56
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Portico
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Preserved
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2026-04-09
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Preserved : 1969/1970: 1(1-4), 1970/1971: 2(1-4), 1971/1972: 3(1-4), 1972/1973: 4(1-4), 1973/1974: 5(1-4), 1974/1975: 6(1-4), 1975/1976: 7(1-4), 1976/1977: 8(1-4), 1977/1978: 9(1-4), 1978/1979: 10(1-4), 1979/1980: 11(1-4), 1980/1981: 12(1-4), 1981/1982: 13(1-4), 1982/1983: 14(1-4), 1983/1984: 15(1-4), 1984/1985: 16(1-4), 1985/1986: 17(1-4), 1986/1987: 18(1-4), 1987/1988: 19(1-4), 1988/1989: 20(1-4), 1989/1990: 21(1-4), 1990/1991: 22(1-4), 1991/1992: 23(1-4), 1992/1993: 24(1-4), 1993/1994: 25(1-4), 1994/1995: 26(1-4), 1995/1996: 27(1-4), 1996/1997: 28(1-4), 1997/1998: 29(1-6), 1998/1999: 30(1-6), 1999/2000: 31(1-6), 2000/2001: 32(1-6), 2001/2002: 33(1-6), 2002/2003: 34(1-6), 2003/2004: 35(1-6), 2004/2005: 36(1-6), 2005/2006: 37(1-6), 2006/2007: 38(1-6), 2007/2008: 39(1-8), 2008/2009: 40(1-8), 2009/2010: 41(1-8), 2010: 42(1-7), 2011: 43(1-8), 2012: 44(1-6, 6, S, s6-8), 2013: 45(1-9), 2014: 46(1-9), 2015: 47(1-9), 2016: 48(1-9), 2017: 49(1-10), 2018: 50(1-10), 2019: 51(1-10), 2020: 52(1-10), 2021: 53(1-10), 2022: 54(1-10), 2023: 55(1-7, 9-10), 2024: 56(1-10), 2025: 57(1-10), 2026: 58(1-2)
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CLOCKSS Archive
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In Progress
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2026-04-06
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6 to 35, 49 to 58
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CLOCKSS Archive
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Preserved
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2026-04-06
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36 to 48
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LOCKSS Archive
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In Progress
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2026-04-06
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57, 58
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Library of Congress
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Preserved
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2025-04-07
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41 (8); 42 (1_suppl, 1 to 7); 43 (1 to 8); 44 (6_suppl, 1 to 8); 45 (1 to 9); 46 (1 to 9); 47 (1 to 9); 48 (1 to 9); 49 (1 to 10); 50 (1 to 10); 51 (1 to 10); 52 (1 to 10); 53 (1 to 10); 54 (1 to 10); 55 (1 to 10); 56 (1 to 9-10)
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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 (1-4); 2 (1-4); 3 (1-4); 4 (1-4); 5 (1-4); 6 (1-4); 7 (1, 2, 4); 8 (1-4); 9 (1-4); 10 (1-4); 11 (1-4); 12 (1-4); 13 (1-4); 14 (1-4); 15 (1-4); 16 (1-4); 17 (1-4); 18 (1-4); 19 (1-4); 20 (1-4); 21 (1-4); 22 (1-4); 23 (1-4); 24 (1-4); 25 (1-4); 26 (1-4); 27 (1-4); 28 (1-4); 29 (1-6); 30 (1-6); 31 (1-6); 32 (1-6); 33 (1-6); 34 (1-6); 35 (1-6); 36 (1-6); 37 (1-6); 38 (1-6); 39 (1-8); 40 (1-7); 41 (1-8); 42 (1-7); 43 (1-3, 7, 8); 44 (1-8); 45 (1-9); 46 (1-9); 47 (1-9); 48 (1-9); 49 (1-10); 50 (1-10); 51 (1-10)
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British Library
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Preserved
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2019-09-18
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Preserved : 46 (1 to 9), 47 (1 to 9), 48 (1 to 9), 49 (1 to 10), 50 (1 to 10)
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