Gagn©♭, Robert M. 1916-2002. Learning and individual differences ; a symposium of the Learning Research and Development Center, University of Pittsburgh. / Edited by Robert M. Gagne. - xv, 265 pages : illustrations ; 24 cm. The symposium was held April 9 and 10, 1965. ISBN: 67509819 LCCN: 67010538 //r893 Subjects--Topical Terms: Learning, Psychology of.Individual differences. LC Class. No.: LB1083 / .G3 LB1083 Dewey Class. No.: 370.152