00514cam a2200169 a 4500 AAC-2417 900705s1991 nyua b 00100 eng 90071171 0879014806 BF121 .G667 1991 Gray, Peter (Peter O.) Psychology / Peter Gray. New York, N.Y. : Worth Publishers, c1991. 1 v. (various pagings) : ill. (some col.) ; 29 cm. Includes bibliographical references and index. Psychology. 376 376