Gagn�e, Robert M. 1916-2002., The conditions of learning /Robert M. Gagn�e. - third edition. - New York : Holt, Rinehart and Winston, (c)1977. - xii, 339 pages : illustrations ; 25 cm. LCCN: 76045797 Subjects--Topical Terms: Learning. LC Class. No.: LB1050 / .C663 1977 LB1050