Public Knowledge Project PLN
2024-2025
Preserved
2026-02-12
Preserved : 56 (1-2, 3-4); 57 (1-2)
Scholars Portal
1987-2024
Preserved
2025-09-02
Preserved : 1 (1); 2 (, 2); 3 (, 3); 4 (, 4); 5 (, 5); 6 (, 6 to 8); 7 (, 9 to 11); 8 (, 12 to 15); 9 (, 16 to 19); 10 (, 20 to 23); 11 (, 24 to 27); 12 (, 28 to 31); 13 (, 32 to 36); 14 (, 37 to 39); 15 (, 40 to 42); 16 (, 43 to 54); 17 (, 47 to 54, 56 to 58); 18 (, 59 to 62); 19 (, 63 to 66); 20 (, 67 to 70); 21 (, 71 to 74); 22 (, 75 to 78); 23 (, 79 to 82); 24 (, 83 to 85); 25 (, 1 to 4); 26 (, 2 to 4); 27 (, 1 to 4); 28 (, 1 to 4); 29 (, 1 to 4); 30 (, 1 to 4); 31 (, 1, 2); 32 (, 1 to 4); 33 (, 1 to 4); 34 (, 1 to 4); 35 (, 1 to 4); 36 (, 1 to 4); 37 (, 1 to 4); 38 (, 1); 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
Portico
1992-2024
Preserved
2026-02-12
Preserved : 1992: 8(12-14), 1993: 9(16-19), 1994: 10(20-23), 1995: 11(24-27), 1996: 12(28-31), 1997/1998: 13(32-36), 1998: 14(37-38), 1999: 15(sup1, 40-42), 2000/2001: 16(44-50), 2002/2003: 17(51-54, 56-58), 2004: 18(59-62), 2005: 19(63-66), 2006: 20(67-70), 2007: 21(71-74), 2008: 22(75-78), 2009: 23(79-82), 2010: 24(83-86), 2011: 25(1-4), 2012: 26(1-4), 2013: 27(1-4), 2014: 28(1-4), 2015: 29(1-4), 2016: 30(1-4), 2017: 31(1-4), 2018: 32(1-4), 2019: 33(1-4), 2020: 34(1-4), 2021: 35(1-4), 2022: 36(1-4), 2023: 37(1-4), 2024: 38(1)
CLOCKSS Archive
1987-2021
Preserved
2026-02-09
ahead-of-print to 30, 32 to 35
LOCKSS Archive
1987-2024
Preserved
2026-02-09
1 to 38
National Digital Preservation Program, China
1997-2023
Preserved
2025-12-04
Preserved : 2 (7, 67 to 69); 3 (1 to 4); 13 (32 to 36); 14 (37 to 39); 15 (sup1, 4, 41, 42); 16 (5, 43 to 49); 17 (51 to 54, 56 to 58); 18 (6, 59, 61, 62); 19 (63 to 66); 21 (71 to 74); 22 (75 to 78); 23 (8, 79, 81, 82); 24 (83 to 86); 25 (1 to 4); 26 (1 to 4); 27 (1 to 4); 28 (1 to 4); 29 (1 to 4); 31 (1, 2, 3-4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1, 2, 4)
Library of Congress
2010-2023
Preserved
2025-04-07
24 (83 to 86); 25 (1 to 4); 26 (1 to 4); 27 (1 to 4); 28 (1 to 4); 29 (1 to 4); 30 (1 to 4); 31 (1 to 3-4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4)