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Internet Archive
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Preserved
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2025-08-08
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1998 (1); 2000; 2003 (1); 2004 (, 1); 2005 (, 1); 2006 (, 1); 2007 (, 1); 2008 (, 1); 2009 (, 1); 2010 (, 1); 2011 (, 1); 2012 (, 1); 2013 (, 1); 2014 (, 1); 2015 (, 1); 2016 (, 1); 2017 (, 1); 2018 (, 1); 2019 (, 1); 2020 (, 1); 2021; 2022
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LOCKSS Archive
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Preserved
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2026-02-09
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1998 to 2020
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Portico
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Preserved
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2026-02-12
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Preserved : 2000: 1998(1)
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CLOCKSS Archive
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Preserved
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2026-02-09
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1998 to 2015
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Portico
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Preserved
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2026-02-12
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Preserved : 2006: 2004(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 2009: 2007(1), 2010: 2008(1), 2011: 2009(1), 2010: 2010(1), 2013: 2011(1), 2014: 2012(1), 2015: 2013(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 2017: 2015(1), 2018: 2016(1), 2019: 2017(1), 2020: 2018(1), 2021: 2019(1), 2022: 2020(1)
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CLOCKSS Archive
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In Progress
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2026-02-09
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2016 to 2020
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Portico
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Preserved
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2026-02-12
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Preserved : 1998: 98, 1999: 1999(1, ), 2000: 2000, 2001: 2001, 2002: 2002(1, ), 2003/2005: 2003(1, ), 2004: 2004, 2005: 2005, 2006/2008: 2006(1, ), 2007: 2007, 2008: 2008, 2009: 2009, 2010: 2010, 2011: 2011, 2012/2014: 2012(1, ), 2013: 2013, 2014: 2014, 2015: 2015, 2016: 2016, 2017: 2017, 2018: 2018
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