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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1918 (1); 1919 (, 1); 1920 (, 1); 1921 (, 1); 1922 (, 1); 1923 (, 1 to 4); 1924 (, 1); 1925 (, 1, 2, 3-4); 1926 (, 1, 2, 3-4); 1927 (, 1, 2-3, 4); 1928 (, 1); 1929 (, 1-2, 3, 4); 1930 (, 1, 2); 1931 (, 1-2, 3, 4); 1932 (, 1-2, 3, 4); 1933 (, 1); 1934 (, 1); 1935 (, 1-2, 3-4); 1936 (, 1-2, 3-4); 1937 (, 3-4); 1938 (, 1-2, 3-4); 1939 (, 1); 1940 (, 1-2, 3-4); 1941 (, 1-2, 3-4); 1942 (, 1-2, 3-4); 1943 (, 1-2, 3-4); 1944 (, 1-2, 3-4); 1945 (, 1-2, 3-4); 1946 (, 1); 1947 (, 1); 1948 (, 1-2, 3-4); 1949 (, 1); 1950 (, 1-2, 3-4); 1951 (, 1-2); 1952 (, 1-2, 3-4); 1953; 1954 (1, 2); 1955 (, 1-2, 3-4); 1956 (, 1, 2); 1957 (, 1-2, 3-4); 1958 (, 1-2, 3-4); 1959 (, 1-2, 3-4); 1960 (, 1-2, 3-4); 1961 (, 1-2, 3-4); 1962 (, 3-4); 1963 (, 1-2, 3-4); 1964 (, 1-2, 3-4); 1965 (, 1-2, 3-4); 1966 (, 1-2, 3-4); 1967 (, 1-2, 3-4); 1968 (, 1-2, 3-4); 1969 (, 1-2, 3-4); 1970 (, 1-2, 3-4); 1971 (, 1-2, 3-4); 1972 (, 1, 2); 1973 (, 1, 2); 1974 (, 1 to 4); 1975 (, 1 to 4); 1976 (, 1 to 4); 1977 (, 1 to 4); 1978 (, 1 to 4); 1979 (, 1, 2-3, 4); 1985 (, 1, 2, 3-4); 1986 (, 1, 2, 3-4); 1987 (, 1-2, 3-4); 1988 (, 1-3, 4); 1989 (, 1 to 4); 1990 (, 1, 2-3); 1991 (, 1, 2); 1992 (, 1, 2); 1993 (, 1, 2); 1994 (, 1, 2); 1995 (, 1, 2); 1996 (, 1, 2); 1997 (, 1, 2); 1998 (, 1, 2); 1999 (, 1, 2); 2000 (, 1, 2); 2001 (, 1, 2); 2002 (, 1 to 4); 2003 (, 1, 2); 2008 (, 1, 4); 2009 (, 1 to 4); 2010 (, 1 to 4); 2011 (, 1 to 4); 2012 (, 1, 3, 4); 2013 (, 1 to 6); 2014 (, 1 to 4, 6 to 8); 2015 (, 1 to 6, 8); 2016 (, 1 to 10); 2017 (, 1 to 10); 2018 (, 2 to 10); 2019 (, 1 to 10); 2020 (, 1 to 10); 2021 (, 1 to 10); 2022 (, 1 to 10); 2023 (, 1 to 10); 2024 (, 1 to 3, 5 to 10); 2025 (, 1 to 6)
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LOCKSS Archive
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Preserved
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2026-02-09
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1918, 1919, 1921 to 2024
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CLOCKSS Archive
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Preserved
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2026-02-09
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ahead-of-print, 1918 to 2025
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LOCKSS Archive
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In Progress
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2026-02-09
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2025
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Portico
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Preserved
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2026-02-12
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Preserved : 1918: 1918(1), 1919: 1919(1), 1920: 1920(1), 1921: 1921(1), 1922: 1922(1), 1923: 1923(1-4), 1924: 1924(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1925: 1925(1-4), 1926: 1926(1-4), 1927: 1927(1-4), 1928: 1928(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1929: 1929(1-4), 1930: 1930(1-2), 1931: 1931(1-4), 1932: 1932(1-4), 1933: 1933(1), 1934: 1934(1), 1935: 1935(1-4), 1936: 1936(1-4), 1937: 1937(3-4), 1938: 1938(1-4), 1939: 1939(1), 1940: 1940(1-4), 1941: 1941(1-4), 1942: 1942(1-4), 1943: 1943(1-4), 1944: 1944(1-4), 1945: 1945(1-4), 1946: 1946(1), 1947: 1947(1), 1948: 1948(1-4), 1949: 1949(1), 1950: 1950(1-4), 1951: 1951(1-2), 1952: 1952(1-4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1953: 1953(sup1, sup2), 1954: 1954(1-2), 1955: 1955(1-4), 1956: 1956(1-2), 1957: 1957(1-2, sup1, 3-4), 1958: 1958(1-4), 1959: 1959(1-4), 1960: 1960(1-4), 1961: 1961(1-4), 1962: 1962(3-4), 1963: 1963(1-4), 1964: 1964(1-4), 1965: 1965(1-4), 1966: 1966(1-4), 1967: 1967(1-4), 1968: 1968(1-4), 1969: 1969(1-4, sup3), 1970: 1970(1-2, sup1, 3-4), 1971: 1971(1-4), 1972: 1972(1-2), 1973: 1973(1-2), 1974: 1974(1-4), 1975: 1975(1-4), 1976: 1976(1-4), 1977: 1977(1-4), 1978: 1978(1-4), 1979: 1979(1-4), 1980: 1980(1-4), 1981: 1981(1-4), 1982: 1982(1-4), 1983: 1983(1-4), 1984: 1984(1-4), 1985: 1985(1-4), 1986: 1986(1-4), 1987: 1987(1-4), 1988: 1988(1-4), 1989: 1989(1-4), 1990: 1990(1-3), 1991: 1991(1-2), 1992: 1992(1-2), 1993: 1993(1-2), 1994: 1994(1-2), 1995: 1995(1-2), 1996: 1996(1-2), 1997: 1997(1-2), 1998: 1998(1-2), 1999: 1999(1-2), 2000: 2000(1-2), 2001: 2001(1-2), 2002: 2002(1-4), 2003: 2003(1-4), 2004: 2004(1-3), 2005: 2005(1-3), 2006: 2006(1-3), 2007: 2007(1-3), 2008: 2008(1-3)
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Portico
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Preserved
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2026-02-12
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Preserved : 2009: 2009(1-4), 2010: 2010(1-4), 2011: 2011(1-4), 2012: 2012(1-4), 2013: 2013(1-6), 2014: 2014(1-8), 2015: 2015(1-8), 2016: 2016(1-10), 2017: 2017(1-10), 2018: 2018(1-10), 2019: 2019(1-10), 2020: 2020(1-10), 2021: 2021(1-10), 2022: 2022(1-10), 2023: 2023(1-10), 2024: 2024(1-10), 2025: 2025(1-10), 2026: 2026(1)
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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 : 2 (1, 2); 21 (1 to 4); 22 (1 to 9); 23 (1 to 4); 24 (1 to 6); 25 (1 to 6); 26 (1 to 6); 27 (1 to 4); 28 (1, 2-3, 4); 29 (1 to 4); 211 (1 to 4); 212 (1 to 4); 213 (1 to 6); 214 (1 to 8); 215 (1 to 8); 216 (1 to 9); 217 (1 to 9); 218 (1 to 9); 219 (1 to 9); 221 (1 to 9); 222 (1 to 9); 223 (1 to 9); 224 (1 to 9); 225 (1, 4); 1997 (1, 2); 1998 (1, 2); 1999 (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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2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024
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