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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); 2 (1, 2); 3 (1, 2); 4 (1, 2); 5 (1 to 4); 6 (1 to 4); 7 (1 to 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, 2-3, 4); 24 (1 to 4); 25 (1 to 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 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 40 (1, 2-3, 4); 41 (1-2, 3, 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 50 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1, 2, 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 60 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (1 to 3)
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Internet Archive
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Preserved
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2025-08-08
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16 to 50
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Portico
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Preserved
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2026-04-09
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Preserved : 1959: 1(1-2), 1960: 2(1-2), 1961/1962: 3(1-2), 1962/1963: 4(1-2), 1963/1964: 5(1-4), 1964/1965: 6(1-4), 1965/1966: 7(1-4), 1966/1967: 8(1-4), 1967/1968: 9(1-4), 1968/1969: 10(1-4), 1969/1970: 11(1-4), 1970/1971: 12(1-4), 1971/1972: 13(1-4), 1972/1973: 14(1-4), 1973/1974: 15(1-4), 1974/1975: 16(1-4), 1975/1976: 17(1-4), 1976/1977: 18(1-4), 1977/1978: 19(1-4), 1978/1979: 20(1-4), 1979/1980: 21(1-4), 1980/1981: 22(1-4), 1981/1982: 23(1-4), 1982/1983: 24(1-4), 1983/1984: 25(1-4), 1984/1985: 26(1-4), 1985/1986: 27(1-4), 1986/1987: 28(1-4), 1987/1988: 29(1-4), 1988/1989: 30(1-4), 1989/1990: 31(1-4), 1990/1991: 32(1-4), 1991/1992: 33(1-4), 1992/1993: 34(1-4), 1993/1994: 35(1-4), 1994/1995: 36(1-4), 1995/1996: 37(1-4), 1996/1997: 38(1-4), 1997/1998: 39(1-4), 1998/1999: 40(1-4), 1999/2000: 41(1-4), 2000/2001: 42(1-4), 2001/2002: 43(1-4), 2002/2003: 44(1-4), 2003/2004: 45(1-4), 2004/2005: 46(1-4), 2005/2006: 47(1-4), 2006/2007: 48(1-4), 2007/2008: 49(1-4), 2008/2009: 50(1-4), 2009/2010: 51(1-4), 2010/2011: 52(1-4), 2011/2012: 53(1-4), 2012/2013: 54(1-4), 2013/2014: 55(1-4), 2014/2015: 56(1-4), 2015/2016: 57(1-4), 2016/2017: 58(1-4), 2017/2018: 59(1-4), 2018/2019: 60(1-4), 2019/2020: 61(1-4), 2020/2021: 62(1-4), 2021/2022: 63(1-4), 2022/2023: 64(1-4), 2023/2024: 65(1-4), 2024/2025: 66(1-4), 2025/2026: 67(1-4)
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CLOCKSS Archive
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In Progress
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2026-04-06
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16 to 48, 59 to 67
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LOCKSS Archive
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In Progress
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2026-04-06
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16 to 41, 66, 67
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LOCKSS Archive
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Preserved
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2026-04-06
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42 to 65
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CLOCKSS Archive
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Preserved
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2026-04-06
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49 to 58
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Library of Congress
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Preserved
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2025-04-07
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51 (3, 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 60 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1, 2)
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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 (2); 2 (1, 2); 3 (1, 2); 4 (1, 2); 5 (1-4); 6 (1-4); 7 (1-4); 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, 2-3, 4); 24 (1-4); 25 (1-4); 26 (1-4); 27 (1-4); 28 (1-4); 29 (1-4); 30 (1-4); 31 (1-4); 32 (1-4); 33 (1-4); 34 (1-4); 35 (1-4); 36 (1-4); 37 (1-4); 38 (1-4); 39 (1-4); 40 (1, 2-3, 4); 41 (3, 4); 42 (1-4); 43 (1-4); 44 (1-4); 45 (1-4); 46 (1-4); 47 (1-4); 48 (1-4); 49 (1-4); 50 (1, 2, 4); 51 (1-4); 52 (1-4); 53 (1, 3, 4); 54 (1-4); 55 (1-4); 56 (1-4); 57 (1, 3, 4); 58 (1-4); 59 (1-4); 60 (1-4); 61 (1, 2)
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British Library
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Preserved
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2019-09-18
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Preserved : 55 (3 to 4), 56 (1 to 4), 57 (1 to 4), 58 (1 to 4), 59 (1 to 4), 60 (1 to 2)
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