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Portico
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Preserved
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2026-02-12
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Preserved : 1981: 1(1-4), 1982: 2(1-4), 1983: 3(1-4), 1984: 4(1-4), 1985: 5(1-4), 1986: 6(1-4), 1987: 7(1-4), 1988: 8(1-4), 1988/1989: 9(1-4), 1989: 10(1-4), 1990: 11(1-4), 1991: 12(1-4), 1991: 13(1-4), 1992: 14(1-4), 1992: 15(1-3), 1992: 16(1-3), 1993: 17(1-3), 1993: 18(1-3), 1994: 19(1-4), 1994: 20(1-4), 1994/1995: 21(1-3), 1995: 22(1-3), 1995: 23(1-3), 1995/1996: 24(1-4), 1996: 25(1-4), 1996: 26(1-4), 1996: 27-28, 1997: 29(1-4), 1997: 30(1-4), 1997/1998: 31(1-4), 1998: 32(1-4), 1998: 33(1-4), 1998: 34(1-4), 1999: 35(1-4), 1999: 36(C), 1999: 36-37, 1999: 38(1-4), 2000: 39(1-4), 2000: 40(1-4), 2000: 41(1-4), 2000: 42(1-4), 2001: 43(1-4), 2001: 44(1-4), 2001: 45(1-4), 2001: 46(1-4), 2002: 47(1-4), 2002: 48(1-4), 2002: 49(1-4), 2002: 50(1-4), 2003: 51(1-4), 2003: 52(1-4), 2003: 53(1-4), 2003: 54(1-4), 2004: 55(1-4), 2004: 56(1-4), 2004: 57(1-4), 2004: 58(1-4), 2005: 59(1-4), 2005: 60(1-4), 2005: 61(1-4), 2005: 62(1-4), 2006: 63(1-12), 2007: 64(1-12), 2008: 65(1-12), 2009: 66(1-12), 2010: 67(1-12), 2011: 68(1-12), 2012: 69(1-12), 2013: 70(1-12), 2014: 71(C), 2014: 72(C), 2014: 73(C), 2014: 74(C), 2014: 75(C), 2014: 77(C), 2014: 78(C), 2014: 79(C), 2014: 80(C), 2014: 81(C), 2014: 82(C), 2015: 83(C), 2015: 85-86, 2015: 87(C), 2015: 88(C), 2015: 90(C), 2015: 91, 2015: 92(C), 2015: 93, 2015: 94(C), 2016: 95, 2016: 96(C), 2016: 97(C), 2016: 98(C), 2016: 99(C), 2016: 101(C), 2016: 102(C), 2016: 103(C), 2016: 104, 2016: 105(C), 2016: 106, 2017: 107, 2017: 108, 2017: 109, 2017: 110, 2017: 111, 2017: 112, 2017: 113, 2017: 114, 2017: 115, 2017: 116, 2017: 117, 2018: 118, 2018: 119, 2018: 120, 2018: 121-122, 2018: 123-124, 2018: 125, 2018: 126, 2018: 127-128, 2019: 129, 2019: 130, 2019: 131, 2019: 132, 2019: 133, 2019: 134, 2019: 135, 2019: 136, 2020: 137, 2020: 138, 2020: 139, 2020: 140-141, 2020: 142, 2020: 143, 2021: 145
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 27, 29 to 36, 38 to 75, 77 to 83, 85, 87, 88, 90 to 99, 101 to 121, 123, 125 to 127, 129 to 140, 142 to 149, 151 to 155, 157, 159 to 170
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1 to 4); 2 (, 1 to 4); 3 (, 1 to 4); 4 (, 1 to 4); 5 (, 1 to 4); 6 (, 1 to 4); 7 (, 1 to 4); 8 (, 1 to 4); 9 (, 1 to 4); 10 (, 1 to 4); 11 (, 1 to 4); 12 (, 1 to 4); 13 (, 1 to 4); 14 (, 1, 2, 3-4); 15 (, 1 to 3); 16 (, 1-3); 17 (, 1 to 3); 18 (, 1 to 3); 19 (, 1, 2-3, 4); 20 (, 1-3, 4); 21 (, 1-2, 3); 22 (, 1 to 3); 23 (, 1 to 3); 24 (, 1-2, 3, 4); 25 (, 1 to 4); 26 (, 1 to 4); 29 (, 1 to 4); 30 (, 1-2, 3, 4); 31 (, 1-2, 3-4); 32 (, 1 to 4); 33 (, 1 to 4); 34 (, 1 to 4); 35 (, 1-2, 3-4); 38 (, 1, 2, 3-4); 39 (, 1-4); 40 (, 1-3, 4); 41 (, 1, 2-3, 4); 42 (, 1, 2-3, 4); 43 (, 1, 2-3, 4); 44 (, 1-4); 45 (, 1, 2-3, 4); 46 (, 1, 2-3, 4); 47 (, 1, 2-3, 4); 48 (, 1-4); 49 (, 1-4); 50 (, 1, 2-3, 4); 51 (, 1, 2-4); 52 (, 1, 2-3, 4); 53 (, 1, 2, 3-4); 54 (, 1 to 4); 55 (, 1-2, 3-4); 56 (, 1-4); 57 (, 1 to 4); 58 (, 1, 2-3, 4); 59 (, 1, 2-3, 4); 60 (, 1-4); 61 (, 1, 2-3, 4); 62 (, 1-4); 63 (, 1 to 3, 4-5, 6 to 8, 9-10, 11, 12); 64 (, 1 to 6, 7-8, 9-12); 65 (, 1, 2, 3-4, 5, 6-7, 8 to 10, 11-12); 66 (, 1, 2, 3-5, 6 to 8, 9-10, 11, 12); 67 (, 1 to 12); 68 (, 1 to 12); 69 (, 1, 2, 3-4, 5, 6, 7-8, 9 to 12); 70 (, 1 to 6, 7-8, 9, 12); 71; 72; 73; 74; 75-76; 77; 78; 80; 81; 82; 83-84; 85-86; 87; 88-89; 90; 91; 92; 93; 94; 95; 96; 97; 98; 99-100; 101; 102; 103; 104; 105; 106; 107; 108; 109; 110; 111; 112; 113; 114; 115; 117; 118; 119; 120; 121; 123; 125; 126; 127; 129; 130; 131; 132; 133; 134; 135; 136; 137; 138; 139; 143; 144; 146; 147; 148; 149; 151; 152; 153; 154; 155; 157; 159; 160; 161; 162; 163; 164; 165; 166; 167; 168; 169; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 1996; 1997; 1998; 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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Portico
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Preserved
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2026-02-12
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Preserved : 2021: 147, 2021: 148, 2021: 149-150, 2021: 151, 2022: 153, 2022: 155-156, 2022: 157-158, 2023: 159, 2023: 160, 2023: 161, 2023: 162, 2024: 163, 2024: 164, 2024: 165, 2024: 166, 2025: 167, 2025: 168, 2025: 169, 2025: 170
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Internet Archive
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Preserved
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2025-08-08
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5 to 42
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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 : 1 (1-4); 2 (1-4); 3 (1-4); 4 (1-4); 5 (1-4); 6 (1-4); 7 (1-4); 8 (1-4); 9 (1-4); 10 (1-4); 11 (1-4); 12 (1-4); 13 (1-4); 14 (1, 2, 3-4); 15 (1-3); 16 (1-3); 17 (2, 3); 18 (1-3); 19 (1, 2-3, 4); 20 (1-3, 4); 21 (1-2, 3); 22 (1-3); 23 (1-3); 24 (1-2, 3, 4); 25 (1-4); 26 (1-4); 27-28 (C); 29 (1-4); 30 (1-2, 3, 4); 31 (1-2, 3-4); 32 (C, 1-4); 33 (1-4); 34 (1-4); 35 (1-2, 3-4); 36-37 (C); 38 (1, 2, 3-4); 39 (1-4); 40 (4); 41 (1, 2-3, 4); 42 (1, 2-3, 4); 43 (1, 2-3, 4); 44 (1-4); 45 (2-3, 4); 46 (1, 2-3, 4); 47 (1, 2-3, 4); 48 (1-4); 49; 50 (2-3, 4); 51 (1, 2-4); 52 (1, 2-3, 4); 53 (1, 2, 3-4); 54 (1-4); 55 (1-2, 3-4); 56 (1-4); 57 (2-4); 58 (1, 2-3, 4); 59 (1, 2-3, 4); 60 (1-4); 61 (2-3, 4); 62 (1-4); 63 (2, 3, 4-5, 6-8, 9-10, 11, 12); 64 (1-6, 7-8, 9-12); 65 (1, 2, 3-4, 5, 6-7, 9, 10, 11-12); 66 (1, 2, 3-5, 6-8, 9-10, 11, 12); 67 (1-12); 68 (1-12); 69 (1, 2, 3-4, 5, 6, 7-8, 9-12); 70 (2-6, 7-8, 9-12); 71 (C); 72; 73; 74; 75-76; 77; 78; 79; 80; 81; 82; 83-84; 85-86; 87; 88-89; 90; 91; 92; 93; 94; 95; 96; 97; 98; 99-100; 101; 102; 103; 104; 105; 106; 107; 108; 109; 110; 111; 112; 113; 114; 115; 116; 117; 118; 119; 120; 121-122; 123-124; 125; 126; 127-128; 129; 130; 131; 132; 133; 134; 135
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