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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 65 (1 to 4); 66 (1 to 4); 67 (1 to 4); 68 (1 to 4)
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Internet Archive
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Preserved
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2025-08-08
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35-36 to 65
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LOCKSS Archive
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Preserved
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2026-04-27
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LOCKSS Archive
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In Progress
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2026-04-27
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Portico
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Preserved
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2026-04-23
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Preserved : 2009/2010: 59(1-4), 2010/2011: 60(1-4), 2011/2012: 61(1-4), 2012/2013: 62(1-4), 2013/2014: 63(1-4), 2014/2015: 64(1-4), 2015/2016: 65(1-4), 2016/2017: 66(1-4), 2017/2018: 67(1-4), 2018/2019: 68(1-4), 2020: 69(1-4), 2021: 70(1-4), 2022: 71(1-4), 2023: 72(1-4), 2024: 73(1-4), 2025: 74(1, 3)
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Portico
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Preserved
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2026-04-23
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Preserved : 1950: 1(1), 1951/1952: 2(1-3), 1952/1953: 3(1-2), 1953/1954: 4(1-2), 1955: 5(1-2), 1955/1956: 6(1-3), 1956/1957: 7(1-3), 1957/1958: 8(1-3), 1958: 9(1-2), 1959: 10(1)
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CLOCKSS Archive
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In Progress
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2026-04-27
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1 to 53, 66 to 68
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Portico
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Preserved
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2026-04-23
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Preserved : 1961: 11(3-4), 1962: 12(1-2)
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Portico
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Preserved
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2026-04-23
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Preserved : 1963/1964: 13(1-4), 1964/1965: 14(1-4), 1965/1966: 15(1-4), 1966/1967: 16(1-4), 1967/1968: 17(1-4), 1968/1969: 18(1-4), 1969/1970: 19(1-4), 1970/1971: 20(1-4), 1972: 21(1-4), 1972/1973: 22(1-4), 1974: 23(3-4), 1974/1975: 24(1-4), 1976: 25(2-4), 1976/1977: 26(1, 3-4), 1977/1978: 27(1-4), 1978/1979: 28(1-4), 1979/1980: 29(1-4), 1980/1981: 30(1-4), 1981/1982: 31(1-4), 1982/1983: 32(1-4), 1983/1984: 33(1-4), 1984/1985: 34(1-4), 1985/1986: 35(1-4), 1986/1987: 36(1-4), 1987/1988: 37(1-4), 1988/1989: 38(1-4), 1989/1990: 39(1-4), 1990/1991: 40(1-4), 1991/1992: 41(1-4), 1992/1993: 42(1-4), 1993/1994: 43(1-4), 1994/1995: 44(1-4), 1995/1996: 45(1-4), 1996/1997: 46(1-4), 1997/1998: 47(1-4), 1998/1999: 48(1-4), 1999/2000: 49(1-4), 2000/2001: 50(1-4), 2001/2002: 51(1-4), 2002/2003: 52(1-4), 2003/2004: 53(1-4), 2004/2005: 54(1-4), 2005/2006: 55(1-4), 2006/2007: 56(1-4), 2007/2008: 57(1-4), 2008/2009: 58(1-4), 2009/2010: 59(1-4), 2010/2011: 60(1-4), 2011/2012: 61(1-4), 2012/2013: 62(1-4), 2013/2014: 63(1-4), 2014/2015: 64(1-4), 2015/2016: 65(1-4), 2016/2017: 66(1-4), 2017/2018: 67(1-4), 2018/2019: 68(1-4)
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LOCKSS Archive
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Preserved
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2026-04-27
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50 to 68
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CLOCKSS Archive
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Preserved
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2026-04-27
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54 to 65
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Library of Congress
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Preserved
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2025-04-07
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59 (2 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 4); 68 (1 to 4)
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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 : 2 (2, 3); 3 (1); 4 (2); 5 (1, 2); 6 (1-3); 7 (1-3); 8 (1, 2); 9 (1, 2); 10 (1); 11 (3-4); 12 (1, 2); 13 (3, 4); 14 (1, 4); 15 (2-4); 16 (1-4); 17 (1-4); 18 (1-4); 19 (1-4); 20 (1-4); 21 (1-2, 3, 4); 22 (1-4); 23 (3, 4); 24 (1-4); 25 (2-4); 26 (1, 3, 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 (1-4); 41 (1-4); 42 (1-4); 43 (1, 2, 3-4); 44 (1, 2, 3-4); 45 (1, 2, 3-4); 46 (1, 2, 3-4); 47 (1-4); 48 (1-4); 49 (1-4); 50 (1-4); 51 (1-4); 52 (1-4); 53 (1-4); 54 (1-4); 55 (1-4); 56 (1-4); 57 (1-4); 58 (1-4); 59 (1-4); 60 (1-4); 61 (1-4); 62 (1-4); 63 (1-4); 64 (1-3); 65 (1-4); 66 (1-4); 67 (1-4); 68 (1-4)
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