Search Results       Your search for [author]Frias, Cesar Manalo., 1953- returned 1 record.           Two-dimensional visual aids and the development of cognitive learning in elementary science. by Frias, Cesar Manalo., 1953-; 1996. Subject: Cognitive learning -- Philippines -- Laguna; Visual aids; Science -- Study and teaching(Elementary -- Philippines -- Laguna.          Add to Book Cart Relevance: 30.20%