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Portico
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Preserved
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2026-04-09
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Preserved : 2001: 44(1), 2001: 45(1), 2002: 46(1), 2002: 47(1), 2003: 48(1), 2003: 49(1), 2004: 50(1), 2004: 51(1), 2005: 52(1), 2005: 53(1), 2005: 54(1), 2006: 55(1), 2006: 56(1), 2007: 57(1), 2007: 58(1), 2007: 59(1), 2008: 60(1-2)
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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; 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; 47; 48; 49; 50; 51; 52; 53; 54; 55; 56; 57; 58; 59; 60 (2 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1, 4); 65 (1 to 4); 66 (1 to 4); 67 (1 to 4); 68 (2 to 4); 69 (1 to 3); 70 (1 to 4); 71 (1 to 4); 72 (1 to 4); 73 (1 to 4); 74 (1 to 4); 75 (1-2, 3, 4); 76 (1-2, 3, 4); 77 (1)
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LOCKSS Archive
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Preserved
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2026-04-06
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1 to 76
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CLOCKSS Archive
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Preserved
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2026-04-06
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ahead-of-print to 76
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LOCKSS Archive
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In Progress
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2026-04-06
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77
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Portico
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Preserved
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2026-04-09
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Preserved : 1971: 3(1), 1972: 4(1), 1973: 5(1), 1974: 6(1), 1975: 7(1), 1976: 8(1), 1977: 9(1), 1978: 10(1), 1979: 11(1), 1980: 12(1), 1981: 13(1), 1982: 14(1), 1983: 15(1), 1984: 16(1), 1985: 17(1), 1986: 18(1), 1987: 19(1), 1988: 20(1), 1989: 21(1), 1990: 22(1), 1990: 23(1), 1991: 24(1), 1991: 25(1), 1992: 26(1), 1992: 27(1), 1993: 28(1), 1993: 29(1), 1994: 30(1), 1994: 31(1), 1995: 32(1), 1995: 33(1), 1996: 34(1), 1996: 35(1), 1997: 36(1), 1997: 37(1), 1998: 38(1), 1998: 39(1), 1999: 40(1), 1999: 41(1), 2000: 42(1), 2000: 43(1), 2001: 44(1), 2001: 45(1), 2002: 46(1), 2002: 47(1), 2003: 48(1), 2003: 49(1), 2004: 50(1), 2004: 51(1), 2005: 52(1), 2005: 53(1), 2005: 54(1), 2006: 55(1), 2006: 56(1), 2007: 57(1), 2007: 58(1), 2007: 59(1), 2008: 60(1-4), 2009: 61(1-4), 2010: 62(1-4), 2011: 63(1-4), 2012: 64(1-4), 2013: 65(1-4), 2014: 66(1-4), 2015: 67(1-4), 2016: 68(1-4), 2017: 69(1-4), 2018: 70(1-4), 2019: 71(1-4), 2020: 72(1-4), 2021: 73(1-4), 2022: 74(1-4), 2023: 75(1-4), 2024: 76(1-4), 2025: 77(1-2)
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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 (1); 5; 6 (2 to 4); 7 (1 to 4); 36 (1); 37; 38; 39; 41; 42; 43; 44; 45; 46; 47; 48; 49; 51; 52; 53; 54; 55; 56; 57; 58; 59; 61 (2 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (1 to 4); 68 (1 to 4); 69 (1 to 4); 71 (1 to 4); 72 (1 to 4); 73 (1 to 4); 74 (1 to 3); 75 (1-2, 3, 4); 76 (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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62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (1 to 4); 68 (1 to 4); 69 (1 to 4); 70 (1 to 4); 71 (1 to 4); 72 (1 to 4); 73 (1 to 4); 74 (1 to 4); 75 (1-2)
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