|
|
Portico
|
|
Preserved
|
2026-05-21
|
|
|
Preserved : 1970/1971: 1(1-4), 1971: 2(1-2), 1972: 3(1-4), 1973: 4(1-4), 1973: 5(1-4), 1974: 6(1-4), 1974: 7(1-4), 1975: 8(1-4), 1975: 9(1-4), 1976: 10(1-4), 1976: 11(1-4), 1977: 12(1-4), 1977: 13(1-4), 1977: 14(1-4), 1978: 15(1-4), 1978: 16(1-4), 1978: 17(1-4), 1979: 18(1-4), 1979: 19(1-4), 1979: 20(1-4)
|
|
|
CLOCKSS Archive
|
|
Preserved
|
2026-05-18
|
|
|
1 to 20
|
|
|
Scholars Portal
|
|
Preserved
|
2026-03-19
|
|
|
Preserved : 1 (1 to 4); 2 (1, 2); 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 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 20 (1 to 4)
|
|
|
Internet Archive
|
|
Preserved
|
2025-08-08
|
|
|
1 to 20
|
|
|
National Library of the Netherlands
|
|
Preserved
|
2024-12-15
|
|
|
Preserved : 1 (1-4); 2 (1, 2); 3 (1-4); 4 (1-4); 5 (1-4); 6 (1, 3, 4); 7 (1-4); 8 (1-4); 9 (1-4); 10 (1-4); 11 (1-4); 12 (1-4); 13 (1-4); 14 (1-4); 15 (1-4); 16 (1-4); 17 (1-4); 18 (1-4); 19 (1-4); 20 (1-4)
|
