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Portico
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Preserved
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2026-04-16
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Preserved : 1973: 1(1-6), 1974: 2(1-6), 1975: 3(1-6), 1976: 4(1-6), 1977: 5(1-6), 1978: 6(1-6), 1979: 7(1-6), 1980: 8(1-6), 1981: 9(1-6), 1982: 10(1-6), 1983: 11(1-6), 1984: 12(1-6), 1985: 13(1-6), 1986: 14(1-6), 1987: 15(1-6), 1988: 16(1-6), 1989: 17(1-6), 1990: 18(1-6), 1991: 19(1-4), 1992: 20(1-4), 1993: 21(1-4), 1994: 22(1-4), 1995: 23(1-4), 1996: 24(1-4), 1997: 25(1-4), 1998: 26(1-4), 1999: 27(1-6), 2000: 28(1-6), 2001: 29(1-6), 2002: 30(1-6), 2003: 31(1-6), 2004: 32(1-6), 2005: 33(1-6), 2006: 34(1-6), 2007: 35(1-6), 2008: 36(1-6), 2009: 37(1-6), 2010: 38(1-6), 2011: 39(1-6), 2012: 40(1-6), 2013: 41(1-6), 2014: 42(1-6), 2015: 43(1-6), 2016: 44(1-6), 2017: 45(1-6), 2018: 46(1-6), 2018/2019: 47(1-6), 2020: 48(1-6), 2021: 49(1-6), 2022: 50(1-6), 2023: 51(1-6), 2024: 52(1-6), 2025: 53(1-6), 2026: 54(1-4)
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LOCKSS Archive
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Preserved
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2026-04-13
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023 to 029, 032 to 034, 036 to 52
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CLOCKSS Archive
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Preserved
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2026-04-13
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040 to 45
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CLOCKSS Archive
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In Progress
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2026-04-13
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46 to 54
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LOCKSS Archive
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In Progress
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2026-04-13
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53, 54
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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 : 5 (1 to 4); 39 (3); 48 (1 to 6); 49 (1 to 6)
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