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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, 2-3, 4); 5 (1 to 4); 6 (1, 2, 3-4); 7 (1, 2, 4); 8 (1 to 4); 9 (1 to 4); 10 (1, 2-3, 4); 11 (1 to 4); 12 (1 to 4); 13 (1 to 4); 14 (1-2, 3-4); 15 (1 to 4); 16 (1 to 4); 17 (1-2, 3-4); 18 (1-2, 3-4); 19 (1-2, 3-4); 20 (1-2, 3-4); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1-3, 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, 2-3, 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 40 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1, 2, 3-4); 48 (1-2, 3-4); 49 (1-2, 3-4); 50 (1 to 4); 51 (1, 2, 3-4); 52 (1, 2-3, 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1, 2, 3-4); 57 (1-2, 3, 4); 58 (1 to 4); 59 (1 to 4); 60 (1 to 4); 61 (1 to 3); 62 (2, 4)
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Portico
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Preserved
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2026-04-02
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Preserved : 1957: 1(1-4), 1958: 2(1-4), 1959: 3(1-4), 1960: 4(1-2, 4), 1961/1962: 5(1-4), 1962/1963: 6(1-4), 1963/1964: 7(1-2, 4), 1964/1965: 8(1-4), 1965/1966: 9(1-4), 1968: 10(1-2, 4), 1969: 11(1-4), 1969/1970: 12(1-4), 1971/1972: 13(1-4), 1972: 14(1-4), 1973: 15(1-4), 1974/1975: 16(1-4), 1975: 17(1, 3-4), 1976: 18(1-4), 1977: 19(1, 3), 1978: 20(1-3), 1979: 21(1-4), 1980: 22(1-4), 1981: 23(1-4), 1982: 24(1-4), 1983: 25(1-4), 1983: 26(1-4), 1984: 27(1-4), 1985: 28(1-4), 1986: 29(1-4), 1987: 30(1-4), 1988: 31(1-4), 1989: 32(1-4), 1990: 33(1-4), 1991: 34(1-4), 1992: 35(1-4), 1993: 36(1-4), 1994: 37(1-4), 1995: 38(1-4), 1996: 39(1-4), 1997: 40(1-4), 1998: 41(1-4), 1999: 42(1-4), 2000: 43(1-4), 2001: 44(1-4), 2002: 45(1-4), 2003: 46(1-4), 2004: 47(1-4), 2005: 48(1, 3)
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Portico
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Preserved
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2026-04-02
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Preserved : 2006: 49(3), 2007: 50(1-4), 2008: 51(1-3), 2009: 52(1-4), 2010: 53(1, 4), 2011: 54(1-4), 2012: 55(1-4), 2013: 56(1-4), 2014: 57(1-4), 2015: 58(1-4), 2016: 59(1-4), 2017: 60(1-4), 2018: 61(1-4), 2019: 62(1-4), 2020: 63(1-4), 2021: 64(1-4), 2022: 65(1-4), 2023: 66(1-4), 2023/2024: 67(1-4), 2025: 68(1-4), 2026: 69(1)
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LOCKSS Archive
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In Progress
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2026-03-30
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Portico
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Preserved
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2026-04-02
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Preserved : 1964: 8(1)
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Portico
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Preserved
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2026-04-02
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Preserved : 1966: 9(4)
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Portico
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Preserved
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2026-04-02
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Preserved : 1968: 10(4), 1969: 11(3)
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Portico
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Preserved
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2026-04-02
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Preserved : 1975: 17(3-4), 1976: 18(1-2), 1977: 19(1-2), 1978: 20(1-2)
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Portico
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Preserved
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2026-04-02
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Preserved : 1980: 22(2-3)
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Portico
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Preserved
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2026-04-02
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Preserved : 1983: 25(3), 1983: 26(1-3)
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Portico
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Preserved
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2026-04-02
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Preserved : 1984: 27(4)
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Portico
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Preserved
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2026-04-02
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Preserved : 1986: 29(4), 1987: 30(4)
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Portico
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Preserved
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2026-04-02
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Preserved : 1989: 32(4)
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Portico
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Preserved
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2026-04-02
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Preserved : 1993: 36(4), 1994: 37(2)
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CLOCKSS Archive
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Preserved
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2026-03-30
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39 to 51
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Portico
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Preserved
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2026-04-02
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Preserved : 1997: 40(1-4), 1998: 41(1-4), 1999: 42(1-4), 2000: 43(1-4), 2001: 44(1-4), 2002: 45(1-4), 2003: 46(1-4), 2004: 47(1-4), 2005: 48(1-4), 2006: 49(1-4), 2007: 50(1-4), 2008: 51(1-4)
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Library of Congress
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Preserved
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2025-04-07
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47 (1 to 3-4); 62 (4); 63 (1 to 4); 64 (1 to 4); 65 (2 to 4); 66 (1 to 4); 67 (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 : 1 (1-4); 2 (1-4); 3 (1-4); 4 (1, 2, 4); 5 (1-4); 6 (1-3); 7 (1, 2, 4); 8 (1-4); 9 (1-4); 10 (1, 2, 4); 11 (1-4); 12 (1-4); 13 (1-4); 14 (1, 3); 15 (1-4); 16 (1-4); 17 (1, 3); 18 (1, 3); 19 (1, 3); 20 (1, 3); 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 (1-4); 30 (1-4); 31 (1-4); 32 (1-4); 33 (1-4); 34 (1-4); 35 (1, 2, 4); 36 (1-4); 37 (1-3); 38 (1-4); 39 (1-4); 40 (1-4); 41 (1-4); 42 (1-4); 43 (1-4); 44 (1-4); 45 (1-4); 46 (1-4); 47 (1-3); 48 (1, 3); 49 (1-2, 3); 50 (1-4); 51 (1-3); 52 (1, 2, 4); 53 (1-4); 54 (1-4)
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