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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (1); 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 (2); 38 (1, 2); 39 (1, 2); 40 (1, 2); 41 (1, 2); 42 (1, 2); 43 (1, 2); 44 (1, 2); 45 (1, 2); 46 (1, 2); 47 (1, 2); 48 (1 to 3); 49 (1 to 3); 50 (1 to 3); 51 (1); 52 (2, 3); 53 (1 to 3); 54 (1 to 3); 55 (1 to 3); 56 (1 to 3); 57 (1, 2); 58 (1, 2-3); 59 (1 to 3)
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LOCKSS Archive
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Preserved
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2026-04-13
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44 to 46
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CLOCKSS Archive
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Preserved
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2026-04-13
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44 to 49
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Portico
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Preserved
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2026-04-23
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Preserved : 1967: 1(1), 1968: 2(1), 1969: 3(1), 1970: 4(1), 1971: 5(1), 1972: 6(1), 1973: 7(1), 1974: 8(1), 1975: 9(1), 1976: 10(1), 1977: 11(1), 1978: 12(1), 1979: 13(1), 1980: 14(1), 1981: 15(1), 1982: 16(1)
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Portico
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Preserved
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2026-04-23
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Preserved : 1984: 18(1), 1985: 19(1), 1986: 20(1), 1987: 21(1), 1988: 22(1), 1989: 23(1), 1990: 24(1), 1991: 25(1), 1992: 26(1), 1993: 27(1), 1994: 28(1), 1995: 29(1), 1996: 30(1), 1997: 31(1), 1998: 32(1), 1999: 33(1), 2000: 34(1), 2001: 35(1), 2002: 36(1), 2003: 37(1-2), 2004: 38(1-2), 2005: 39(1-2), 2006: 40(1-2), 2007: 41(1-2), 2008: 42(1-2), 2009: 43(1-2), 2010: 44(1-2), 2011: 45(1-2), 2012: 46(1-2), 2013: 47(1-2), 2014: 48(1-3), 2015: 49(1)
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LOCKSS Archive
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Preserved
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2026-04-13
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1 to 58
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CLOCKSS Archive
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Preserved
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2026-04-13
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1 to 59
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LOCKSS Archive
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In Progress
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2026-04-13
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59
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Portico
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Preserved
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2026-04-23
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Preserved : 1983: 17(1), 1984: 18(1), 1985: 19(1), 1986: 20(1), 1987: 21(1), 1988: 22(1), 1989: 23(1), 1990: 24(1), 1991: 25(1), 1992: 26(1), 1993: 27(1), 1994: 28(1), 1995: 29(1), 1996: 30(1), 1997: 31(1), 1998: 32(1), 1999: 33(1), 2000: 34(1), 2001: 35(1), 2002: 36(1), 2003: 37(1-2), 2004: 38(1-2), 2005: 39(1-2), 2006: 40(1-2), 2007: 41(1-2), 2008: 42(1-2), 2009: 43(1-2), 2010: 44(1-2), 2011: 45(1-2), 2012: 46(1-2), 2013: 47(1-2), 2014: 48(1-3), 2015: 49(1-3), 2016: 50(1-3), 2017: 51(1-3), 2018: 52(1-3), 2019: 53(1-3), 2020: 54(1-3), 2021: 55(1-3), 2022: 56(1-3), 2023: 57(1-3), 2024: 58(1-3), 2025: 59(1-3)
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National Digital Preservation Program, China
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Preserved
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2025-12-04
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Preserved : 51 (1 to 3)
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National Digital Preservation Program, China
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Preserved
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2025-12-04
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Preserved : 51 (1 to 3)
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National Digital Preservation Program, China
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Preserved
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2025-12-04
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Preserved : 4 (2); 5 (1 to 3); 31 (1); 32; 33; 34; 35; 36; 37 (2); 38 (1, 2); 39 (1, 2); 41 (1, 2); 42 (1, 2); 43 (1, 2); 44 (1, 2); 45 (1, 2); 46 (1, 2); 47 (1, 2); 48 (1 to 3); 49 (1 to 3); 51 (1 to 3); 52 (1 to 3); 53 (1 to 3); 54 (1 to 3); 55 (1 to 3); 56 (1 to 3); 57 (1 to 3); 58 (1, 2-3)
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Library of Congress
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Preserved
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2025-04-07
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50 (3); 51 (1 to 3); 52 (1 to 3); 53 (1 to 3); 54 (1 to 3); 55 (1 to 3); 56 (1 to 3); 57 (1 to 3); 58 (1)
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