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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 to 4); 2 (sup1, 1 to 4); 3 (sup5, 1 to 4); 4 (S11, 1 to 4); 5 (sup14, 1 to 4); 6 (sup17, 1 to 4); 7 (S21, 1 to 4); 8 (sup23, 1 to 4); 9 (S35, 1 to 4); 10 (sup37, 1 to 4); 11 (sup42, 1 to 4); 12 (sup48, 1 to 4); 13 (sup53, 1 to 4); 14 (sup56, 1 to 4); 15 (sup58, 1 to 4); 16 (sup64, 1 to 6); 17 (sup67, 1 to 6); 18 (sup77, 1 to 6); 19 (sup81, 1 to 6); 20 (sup91, 1 to 6); 21 (sup92, 1 to 6); 22 (1 to 6); 23 (sup97, 1 to 6); 24 (S101, 1 to 6); 25 (S102, 1 to 6); 26 (1 to 6); 27 (sup107, 1 to 6); 28 (sup109, 1 to 6, 109 to 113); 29 (sup113, 1 to 6, 109, 112, 113); 30 (sup115, 1 to 6, 115); 31 (s116, 1 to 6); 32 (1 to 6); 33 (s118, 1 to 6); 34 (S120, 1 to 6); 35 (sup121, 1 to 6); 36 (1 to 6); 37 (S123, 1 to 6); 38 (1 to 6); 39 (S124, 1 to 6); 40 (S125, 1 to 6); 41 (S126, 1 to 6); 42 (1 to 6); 43 (sup127, 1 to 6); 44 (1 to 6); 45 (sup128, 1 to 6); 46 (1 to 6); 47 (sup129, 1 to 6); 48 (1 to 6); 49 (1 to 6); 50 (sup130, 1 to 6); 51 (1 to 6); 52 (sup131, 1 to 6); 53 (1 to 6); 54 (sup132, 1 to 6); 55 (1, 2)
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Portico
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Preserved
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2026-04-02
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Preserved : 1956: 2(1)
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Portico
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Preserved
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2026-04-02
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Preserved : 1958: 4(1), 1959: 5(1), 1960: 6(1), 1961: 7(1), 1962: 8(1), 1980: 9(1), 1964: 10(1)
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Portico
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Preserved
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2026-04-02
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Preserved : 1984: 13(4)
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Portico
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Preserved
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2026-04-02
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Preserved : 1987: 16(1)
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Portico
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Preserved
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2026-04-02
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Preserved : 1991: 20(1)
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Portico
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Preserved
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2026-04-02
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Preserved : 1999: 28(5-6)
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Portico
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Preserved
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2026-04-02
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Preserved : 2002: 31(2, 4, S 116, S 117)
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Portico
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Preserved
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2026-04-02
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Preserved : 2009: 38(4-6), 2010: 39(1-6, S 124)
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Portico
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Preserved
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2026-04-02
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Preserved : 2011: 40(2-6, S 125)
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Portico
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Preserved
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2026-04-02
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Preserved : 2012: 41(2-6, S 126), 2013: 42(1-6), 2014: 43(1-6, S 127), 2015: 44(1-4)
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LOCKSS Archive
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Preserved
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2026-04-06
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1 to 53
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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 54
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LOCKSS Archive
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In Progress
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2026-04-06
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54, 55
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Portico
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Preserved
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2026-04-02
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Preserved : 1976: 5(1-2, sup14-sup15), 1977: 6(1), 1978: 7(1), 1979: 8(1-4, sup23-sup25), 1980: 9(1-4)
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Portico
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Preserved
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2026-04-02
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Preserved : 1981: 10(1-4), 1982: 11(1-4), 1983: 12(1-4), 1984: 13(1-4)
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Portico
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Preserved
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2026-04-02
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Preserved : 1985: 14(1-4), 1986: 15(1-4, sup61, sup63), 1987: 16(1-6), 1988: 17(1-6)
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Portico
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Preserved
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2026-04-02
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Preserved : 1989: 18(1-6), 1990: 19(1-6), 1991: 20(1-6), 1992: 21(1-6)
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Portico
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Preserved
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2026-04-02
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Preserved : 1993: 22(1-6), 1994: 23(1-6), 1995: 24(1-6), 1996: 25(1-6)
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Portico
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Preserved
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2026-04-02
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Preserved : 1997: 26(1-6), 1998: 27(1-6, sup107-sup108), 1999: 28(1-6, sup109-sup112)
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Portico
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Preserved
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2026-04-02
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Preserved : 2000: 29(1-6, sup113)
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Portico
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Preserved
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2026-04-02
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Preserved : 2001: 30(1-6, sup115), 2002: 31(1-6), 2003: 32(1-6), 2004: 33(1-6), 2005: 34(1-6), 2006: 35(1-6), 2007: 36(1-6), 2008: 37(1-6, sup123), 2009: 38(1-6), 2010: 39(1-6), 2011: 40(1-6), 2012: 41(1-6)
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Portico
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Preserved
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2026-04-02
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Preserved : 2013: 42(1-6), 2014: 43(1-6), 2015: 44(1-6), 2016: 45(1-6, sup128), 2017: 46(1-6), 2018: 47(1-6, sup129), 2019: 48(1-6), 2020: 49(1-6), 2021: 50(1-6, sup130, 130), 2022: 51(1-6), 2023: 52(1-6, sup131, 131), 2024: 53(1-6), 2025: 54(1-6, sup132, 132), 2026: 55(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 : 3 (sup115, 1 to 6, 115); 4 (sup125, 1 to 6); 5 (sup13, 1 to 6); 26 (1 to 6); 27 (sup17, 1 to 6); 28 (sup19, 1 to 6, 11, 19, 111 to 113); 29 (sup113, 1 to 6, 19, 112, 113); 31 (sup116, 1 to 6); 32 (1 to 6); 33 (sup118, 1 to 6); 34 (sup12, 1 to 6); 35 (sup121, 1 to 6); 36 (1 to 6); 37 (sup123, 1 to 6); 38 (1 to 6); 39 (sup124, 1 to 6); 41 (sup126, 1 to 6); 42 (1 to 6); 43 (sup127, 1 to 6); 44 (1 to 6); 45 (sup128, 1 to 6); 46 (1 to 6); 47 (sup129, 1 to 6); 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (sup131, 1 to 5); 53 (1 to 6); 54 (1 to 3)
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