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history of technique (3) |
istoria ştiinţei (3) |
istoria ştiinţei tehnice (3) |
history of pedagogy (2) |
history of science (2) |
history of tehnical science (2) |
istoria pedagogiei (2) |
istoria tehnicii (2) |
Beleş Aurel (1) |
Poenaru Petrache (1) |
Now showing items 1-10 of 3