TY - BOOK AU - Murray,Frank B. TI - The impact of Piagetian theory SN - 0839112939 PY - 1979/// CY - Baltimore PB - University Park Press KW - Piaget, Jean, b.1896 KW - Cognition in children KW - Congresses KW - Knowledge, Theory of KW - Child mental health KW - Educational psychology N1 - Based upon the authors' presentations at the plenary sessions of the fifth annual symposium of the Jean Piaget Society ER -