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CLOCKSS Archive
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Preserved
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2026-02-09
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17 to 20
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LOCKSS Archive
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Preserved
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2026-02-09
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17 to 20
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CLOCKSS Archive
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Triggered
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2026-02-09
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to, 17, 20
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Portico
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triggered
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2026-02-12
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Preserved : 1995: 1(1-2), 1996: 2(1-2), 1997: 3(1-2), 1998: 4(1-2), 1999: 5(1-2), 2000: 6(1), 2002: 8(1-2), 2003: 9(1-2), 2004: 10(1-2), 2005: 11(1-3), 2006: 12(1-3), 2007: 13(1-3), 2008: 14(1-3), 2009: 15(1-3), 2010: 16(1-3), 2011: 17(1-4), 2012: 18(1-3), 2013: 19(1-4), 2014: 20(1-2, 5)
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