Gagne, Robert M. 1916 - Principles of instructional design/ Robert M. Gagne, Leslie J. Briggs, Walter W. Wager - 4th ed. - Fort Worth, Tex. : Harourt Brace Jovanovich Pub., c1992 - xvi, 365 p. ; 23 cm. Includes bibliographical references and index ISBN: 0030347572 $ 42.75 Subjects--Topical Terms: Instructional systems--DesignLearning Dewey Class. No.: 371.3