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1دورية أكاديمية
المصدر: Science Education; Apr/May1944, Vol. 28 Issue 3, p130-135, 6p
مصطلحات موضوعية: SCIENCE education, PHYSICAL sciences education, SECONDARY education, ELEVENTH grade (Education), TWELFTH grade (Education), SCIENTIFIC experimentation, ENERGY transfer, MOTION picture projectors, TEACHING aids
مصطلحات جغرافية: UNITED States