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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1); 2 (, 1); 4 (, 1); 6 (, 1); 10 (, 1); 11 (, 1); 14 (, 1); 16 (, 1); 17 (, 1); 21 (, 1); 22 (, 1); 23 (, 1); 24 (, 1); 25 (, 1); 26 (, 1); 28 (, 3); 29 (, 3); 30 (, 3); 31 (, 2, 3); 34 (, 2); 36 (, 1, 2); 37 (, 1, 2); 38 (, 1, 2); 39 (, 1, 2); 40 (, 1); 41 (, 1 to 3); 42 (, 1 to 3); 43 (, 1 to 3); 44 (, 1 to 3); 45 (, 1 to 3); 46 (, 3); 1974; 1975; 1977; 1979; 1983; 1984; 1987; 1989; 1990; 1994; 1995; 1996; 1997; 1998; 1999; 2001; 2002; 2003; 2004; 2007; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019
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Internet Archive
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Preserved
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2025-08-08
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1 to 9
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Portico
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Preserved
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2026-02-12
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Preserved : 1974: 1(1), 1975: 2(1), 1976: 3(1), 1977: 4(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1979: 6(1), 1980: 7(1), 1981: 8(1), 1982: 9(1), 1983: 10(1), 1984: 11(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1987: 14(1), 1988: 15(1), 1989: 16(1), 1990: 17(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1992: 19(1), 1993: 20(1), 1994: 21(1), 1995: 22(1), 1996: 23(1), 1997: 24(1, 3)
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Portico
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Preserved
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2026-02-12
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Preserved : 1999: 26(1, 3), 2000: 27(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 2002: 28(1-2), 2002: 29(1, 3)
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Portico
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Preserved
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2026-02-12
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Preserved : 2003: 30(2-3), 2004: 31(2-3), 2005: 32(1), 2003/2006: 33(1-3), 2007: 34(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 2009: 36(2), 2010: 37(2), 2011: 38(1), 2012: 39(1-2), 2013: 40(1-2), 2014: 41(1-3), 2015: 42(1-2), 2016: 43(1-3), 2017: 44(1-3), 2018: 45(1-3), 2019: 46(1-3), 2019/2020: 47(1-3), 2020/2021: 48(1-3), 2021/2022: 49(1-3), 2022/2023: 50(1-3), 2024: 51(1-3), 2024/2025: 52(1-3)
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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); 4 (1); 6 (1); 10 (1); 11 (1); 14 (1); 16 (1); 17 (1); 21 (1); 22 (1); 23 (1); 24 (1); 26 (1); 37 (2); 40 (1); 46 (1 to 3); 47 (1 to 3); 48 (1 to 3); 49 (1 to 3); 50 (1, 3); 51 (1 to 3)
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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; 6; 7; 8; 9; 10; 11; 14; 15; 16; 17; 19; 20; 21; 22; 23; 24 (3); 26 (1, 3); 27 (1); 29 (3); 30; 31; 32 (1); 33; 34; 36 (2); 37 (1, 2); 38 (1, 2)
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