TY - BOOK AU - Petri, Herbert L. AU - ED - ED - ED - ED - TI - : theory, research, and applications SN - 0534143644 (hardbound) SN - 2 PY - 1991///;copyright 1991.46 CY - Belmont, Calif. PB - Wadsworth Pub. Co. KW - KW - 2 KW - 0 KW - 6 KW - 20 KW - Motivation (Psychology) N1 - Includes bibliographical references (p. 370-418) and indexes; 5 ER -