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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 12 (1); 14 (, 1); 17 (, 1); 18-28 (, 1); 30 (, 1); 31-32 (, 1); 34 (, 2); 35 (, 1); 36 (, 1 to 3); 37 (, 1, 2); 38 (, 1, 2-3); 39 (, 1 to 3); 40 (, 1 to 3); 41 (, 1 to 3); 42 (, 1 to 3); 43 (, 1 to 3); 1985; 1987; 1990; 1994; 2005; 2007; 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 6
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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), 1978: 5(1-2), 1979: 6(1), 1980: 7(1), 1981: 8(1), 1982: 9(1), 1983: 10(1), 1984: 11(1), 1985: 12(1), 1986: 13(1), 1987: 14(1), 1988: 15(1), 1989: 16(1), 1990: 17(1), 1994: 18-28(1), 2002: 29(1), 2003: 30(1), 2007: 31-32(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 2010: 34(1), 2011: 35(1), 2012: 36(1-3), 2013: 37(1-3), 2014: 38(1-3), 2015: 39(1-2), 2016: 40(1-3), 2017: 41(1-3), 2018: 42(1-3), 2019: 43(1-3), 2020: 44(1-3), 2021: 45(1-3), 2022/2023: 46(1-3), 2023: 47(1-3), 2024/2025: 48(1-3), 2025/2026: 49(1-3)
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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; 5; 6; 7; 8; 9; 10; 11; 12; 13; 14; 15; 16; 17; 18; 29; 33; 34 (2); 35 (1, 2)
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Library of Congress
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Preserved
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2025-04-07
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5 (1, 2); 18-28 (1); 30 (1); 31-32 (1); 36 (3); 37 (3); 43 (1 to 3); 44 (1 to 3); 45 (1 to 3); 46 (1 to 3); 47 (1, 2-3); 48 (1)
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