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7 indexing sources
Archival Status
The International Association for the Advancement of Curriculum Studies (IAACS)
Public Knowledge Project PLN
Preserved : 1 (1); 2; 3 (2); 4 (1 to 3); 5 (1, 2); 6 (1, 2); 7 (1, 2); 8 (1, 2); 9 (1, 2); 10 (1, 2); 11; 12 (1, 2); 13 (1, 2); 14 (1-2); 15 (2); 16 (1, 2); 17 (1, 2); 18