TY - BOOK AU - Gagné,Robert M. TI - Principles of instructional design SN - 0534582842 AV - LB 1028.38 .G34 2005 PY - 2005/// CY - Boston, Ma PB - Cengage KW - Instructional systems KW - Design KW - Learning N1 - Previous edition entered under Robert Mills Gagné; Includes bibliographical references and indexes ER -