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Internet Archive
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Preserved
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2025-08-08
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1 to 60
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 70
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Portico
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Preserved
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2026-02-12
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Preserved : 1956: 1(1)
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Portico
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Preserved
|
2026-02-12
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Preserved : 1958: 3(9), 1959: 4(13), 1960: 5(17)
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Portico
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Preserved
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2026-02-12
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Preserved : 1961: 6(21), 1962: 7(25), 1963: 8(29), 1964: 9(33)
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Portico
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Preserved
|
2026-02-12
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Preserved : 1965: 10(37), 1966: 11(41)
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Portico
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Preserved
|
2026-02-12
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Preserved : 1968: 13(49-52), 1969: 14(53-54), 1970: 15(57), 1971: 16(61), 1972: 17(65)
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Portico
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Preserved
|
2026-02-12
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Preserved : 1973: 18(69), 1974: 19(73), 1975: 20(77-78), 1976: 21(81)
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Portico
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Preserved
|
2026-02-12
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Preserved : 1977: 22(85-86), 1978: 23(89-92), 1979: 24(93), 1980: 25(97-100), 1981: 26(101-104), 1982: 27(105), 1983: 28(109-111), 1984: 29(113-114)
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Portico
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Preserved
|
2026-02-12
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Preserved : 1985: 30(117-118), 1986: 31(121-122), 1987: 32(125-128), 1988: 33(129-131)
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Portico
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Preserved
|
2026-02-12
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Preserved : 1989: 34(133-134), 1990: 35(137-138), 1991: 36(140-142, 140-143), 1992: 37(145-146)
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Portico
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Preserved
|
2026-02-12
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Preserved : 1995: 40(156-159), 1996: 41(160-163), 1997: 42(164-165), 1998: 43(168-169), 1999: 44(172-175), 2000: 45(176-177)
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Portico
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Preserved
|
2026-02-12
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Preserved : 2001: 46(180-181), 2002: 47(184-185), 2003: 48(188-191), 2004: 49(192-193)
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Portico
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Preserved
|
2026-02-12
|
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Preserved : 2006: 51(200-201), 2007: 52(204-207), 2008: 53(208-209)
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Portico
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Preserved
|
2026-02-12
|
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|
Preserved : 2009: 54(212-213), 2010: 55(216-217), 2011: 56(220-221), 2012: 57(224-225)
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Portico
|
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Preserved
|
2026-02-12
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Preserved : 2013: 58(228-229), 2014: 59(232-233), 2015: 60(236-239), 2016: 61(240-241)
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Portico
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Preserved
|
2026-02-12
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Preserved : 2020: 65(256-257)
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Portico
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Preserved
|
2026-02-12
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Preserved : 2025: 70(278-279)
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