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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 20 (1 to 4); 21 (, 1 to 4); 22 (, 1 to 5); 23 (, 1 to 5); 24 (, 1 to 5); 25 (, 1 to 5); 26 (, 1 to 5); 27 (, 1 to 5); 28 (, 1 to 4); 29 (, 1 to 5); 30 (, 1 to 5); 31 (, 1 to 5); 32 (, 1 to 5); 33 (, 1 to 5); 34 (, 1 to 5); 35 (, 1 to 5); 36 (, 1 to 5); 37 (, 1 to 5); 38 (, 1 to 5); 39 (, 1 to 5); 40 (, 1, 2, 4, 5); 41 (, 1 to 5); 42 (, 1 to 5); 43 (, 1 to 5); 44 (, 1 to 5); 45 (, 1 to 5); 46 (, 1 to 5); 1997; 1998; 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 46
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Portico
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Preserved
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2026-02-12
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Preserved : 1978: 1(1-4), 1979: 2(1-4), 1980: 3(1-4), 1981: 4(1-4), 1982: 5(1-4), 1983: 6(1-4), 1984: 7(1-4), 1985: 8(1-4), 1986: 9(1-4), 1987: 10(1-4), 1988: 11(1-4), 1989: 12(1-4), 1990: 13(1-4), 1991: 14(1-4), 1992: 15(1-4), 1993: 16(1-4), 1994: 17(1-4), 1995: 18(1-4), 1996: 19(1-4), 1997: 20(1-4), 1998: 21(1-4), 1999: 22(1-4), 2000: 23(1-4), 2001: 24(1-4), 2002: 25(1-4), 2003: 26(1-4), 2004: 27(1-4), 2005: 28(1-4), 2006: 29(1-4), 2007: 30(1-4), 2008: 31(1-4), 2009: 32(1-4), 2010: 33(1-4), 2011: 34(1-4), 2012: 35(1-5), 2013: 36(1-5), 2014: 37(1-5), 2015: 38(1-5), 2016: 39(1-5), 2017: 40(1-5), 2018: 41(1-5), 2019: 42(1-5), 2020: 43(1-5), 2021: 44(1-5), 2022: 45(1-5), 2023: 46(1-5)
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Portico
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Preserved
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2026-02-12
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Preserved : 2001: 24(4)
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LOCKSS Archive
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Preserved
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2026-02-09
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31 to 47
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CLOCKSS Archive
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In Progress
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2026-02-09
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31 to 48
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Portico
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Preserved
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2026-02-12
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Preserved : 2023: 46(4-5), 2024: 47(1-5), 2025: 48(1-4)
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LOCKSS Archive
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In Progress
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2026-02-09
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48
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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 : 29 (1-5); 30 (1-5)
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