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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 (1 to 4); 3 (1‐2, 3‐4); 4 (1‐2, 3‐4); 5 (1‐2, 3‐4); 6 (1‐2, 3‐4); 7 (1‐2, 3‐4); 8 (s1, 1‐2, 3‐4); 9 (1‐2, 3‐4); 10 (1‐2, 3‐4); 11 (s2, 1‐2, 3‐4); 12 (1 to 4); 13 (1, 2, 3‐4); 14 (1‐2, 3‐4); 15 (1‐2, 3‐4); 16 (1‐2, 3‐4); 17 (1‐2, 3‐4); 18 (s3, 1‐2, 3‐4); 19 (1‐2, 3‐4); 20 (1, 2); 21 (1, 2); 22 (1, 2); 23 (1, 2); 24 (1, 2); 25 (1, 2); 26 (1, 2); 27 (1, 2); 28 (1, 2); 29 (1, 2); 30 (1, 2); 31 (1, 2); 32 (1, 2); 33 (s5, 1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 40 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (s1, 1 to 4); 49 (s1, 1 to 4); 50 (s1, 1 to 4); 51 (s1, 1 to 4); 52 (s1, 1 to 4); 53 (S1, 1 to 4); 54 (S1, 1 to 4); 55 (S1, 1 to 4); 56 (s1, 1 to 4); 57 (s1, 1 to 4); 58 (s1, 1 to 4); 59 (s1, 1 to 4); 60 (s1, 1 to 4); 61 (1 to 4); 62 (s1, 1 to 4); 63 (s1, 1 to 4); 64 (s1, 1 to 4); 65 (S1, 1 to 4); 66 (S1, 1 to 4); 67 (S1, 1 to 4); 68 (, 1 to 4); 69 (S1, 1 to 4); 70 (S1, 1 to 4); 71 (S1, 1 to 4); 72 (S1, 1 to 4); 73 (S1, 1 to 4); 74 (S1, 1 to 4); 75 (S1, 1 to 4); 76 (1)
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Internet Archive
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Preserved
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2025-08-08
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1 to 64
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Portico
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Preserved
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2026-04-23
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Preserved : 1948: 1(1-4), 1949: 2(1-4), 1950: 3(1-4), 1951/1952: 4(1-4), 1953/1955: 5(1-4), 1955/1956: 6(1-4), 1956: 7(1-4), 1958: 8(1-2, s1, 3-4), 1959: 9(1-4), 1960: 10(1-4), 1961: 11(1-4), 1962: 12(1-4), 1963: 13(1-4), 1964: 14(1-4), 1965: 15(1-4), 1966: 16(1-4), 1967: 17(1-4)
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CLOCKSS Archive
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Preserved
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2026-04-27
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1 to 76
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Portico
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Preserved
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2026-04-23
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Preserved : 1968: 18(3-4, s3), 1969: 19(1-4), 1970: 20(1-2), 1971: 21(1-2), 1972: 22(1-2), 1973: 23(1-2), 1974: 24(1-2), 1975: 25(1-2), 1976: 26(1-2), 1977: 27(1-2), 1978: 28(1-2), 1979: 29(1-2), 1980: 30(1-2), 1981: 31(1-2), 1982: 32(1-2), 1983/1984: 33(1-s5), 1984: 34(1-4), 1985: 35(1-4), 1986: 36(1-4), 1987: 37(1-4), 1988: 38(1-4), 1989: 39(1-4), 1990: 40(1-4), 1991: 41(1-4), 1992: 42(1-4), 1993: 43(1-4), 1994: 44(1-4), 1995: 45(1-4), 1996: 46(1-4), 1997: 47(1-4), 1998: 48(1-4), 1999: 49(1-4), 2000: 50(1-4), 2001: 51(1-4), 2002: 52(1-4), 2003: 53(1, S 1, 2-4), 2004: 54(1, S 1, 2-4), 2005: 55(1, S 1, 2-4), 2006: 56(1-2, S 2, 3-4), 2007: 57(1-4), 2008: 58(1-4), 2009: 59(1-4), 2010: 60(1-4), 2011: 61(1-4), 2012: 62(1-4), 2013: 63(1-4), 2014: 64(1, S 1, 2, S 2, 3-4), 2015: 65(1, S 1, 2-4), 2016: 66(1, S 1, 2, S 2, 3-4), 2017: 67(1, S 1, 2-4), 2018: 68(1, S1, 2-4), 2019: 69(1, S1, 2-4), 2020: 70(1, S1, 2, S 2, 3-4), 2021: 71(1, S 1, 2-4), 2022: 72(1, S 1, 2-4), 2023: 73(1, S 1, 2, S 2, 3-4), 2024: 74(1, S 1, 2, S 2, 3-4), 2025: 75(1, S 1, 2-4)
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National Digital Preservation Program, China
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Preserved
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2025-10-23
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Preserved : 5 (, 1 to 4); 6 (, 1 to 4); 7 (S1, 1 to 4); 47 (1 to 4); 48 (, 1 to 4); 49 (, 1 to 4); 51 (, 1 to 4); 52 (, 1 to 4); 53 (S1, 1 to 4); 54 (S1, 1 to 4); 55 (S1, 1 to 4); 56 (, 1 to 4); 57 (, 1 to 4); 58 (, 1 to 4); 59 (, 1 to 4); 61 (, 1 to 4); 62 (, 1 to 4); 63 (, 1 to 4); 64 (s1, 1 to 4); 65 (S1, 1 to 4); 66 (S1, 1 to 4); 67 (S1, 1 to 4); 68 (, 1 to 4); 69 (S1, 1 to 4); 71 (S1, 1 to 4); 72 (S1, 1 to 4); 73 (S1, 1 to 4); 74 (S1, 1 to 4); 75 (S1, 1 to 3)
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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); 6 (, 1 to 4); 7 (S1, 1 to 4); 47 (1 to 4); 48 (, 1 to 4); 49 (, 1 to 4); 51 (, 1 to 4); 52 (, 1 to 4); 53 (S1, 1 to 4); 54 (S1, 1 to 4); 55 (S1, 1 to 4); 56 (, 1 to 4); 57 (, 1 to 4); 58 (, 1 to 4); 59 (, 1 to 4); 61 (, 1 to 4); 62 (, 1 to 4); 63 (, 1 to 4); 64 (s1, 1 to 4); 65 (S1, 1 to 4); 66 (S1, 1 to 4); 67 (S1, 1 to 4); 68 (, 1 to 4); 69 (S1, 1 to 4); 71 (S1, 1 to 4); 72 (S1, 1 to 4); 73 (S1, 1 to 4); 74 (S1, 1 to 4); 75 (S1, 1 to 3)
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National Library of the Netherlands
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Preserved
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2024-12-15
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Preserved : 56 (S1, 1-4); 57 (s1, 1-4)
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