Frias, C. M. (1996). Two-dimensional visual aids and the development of cognitive learning in elementary science.
Chicago-viite (17. p.)Frias, Cesar Manalo. Two-dimensional Visual Aids and the Development of Cognitive Learning in Elementary Science. 1996.
MLA-viite (9. p.)Frias, Cesar Manalo. Two-dimensional Visual Aids and the Development of Cognitive Learning in Elementary Science. 1996.
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