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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (none); 2; 3; 4; 5; 6; 7; 8; 9; 10; 11; 12; 13; 14; 15; 16; 17; 18; 19; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46; 57
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CLOCKSS Archive
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Preserved
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2026-03-30
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1 to 58
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Portico
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Preserved
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2026-04-02
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Preserved : 1967: 1, 1968: 2, 1969: 3, 1970: 4, 1971: 5, 1972: 6, 1973: 7, 1974: 8, 1975: 9, 1976: 10, 1977: 11, 1978: 12, 1979: 13, 1980: 14, 1981: 15, 1982: 16, 1983: 17, 1984: 18, 1985: 19, 1986: 20, 1987: 21, 1988: 22, 1989: 23, 1990: 24, 1991: 25, 1992: 26, 1993: 27, 1994: 28, 1995: 29, 1996: 30, 1997: 31, 1998: 32, 1999: 33, 2000: 34, 2001: 35, 2002: 36, 2003: 37, 2004: 38, 2005: 39, 2006: 40, 2007: 41, 2008: 42, 2009: 43, 2010: 44, 2011: 45, 2012: 46
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Portico
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Preserved
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2026-04-02
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Preserved : 2014: 48, 2015: 49, 2017: 50, 2017: 51, 2018: 52, 2019: 53, 2020: 54, 2021: 55, 2022: 56, 2023: 57, 2024: 58
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Library of Congress
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Preserved
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2025-04-07
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53 (); 54 (); 55 (); 56 (2022); 57 (2023)
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