TY - BOOK AU - Knapper,Christopher Kay TI - Evaluating instructional technology SN - 0470269944 U1 - 371.3078 PY - 1980/// CY - London PB - Croom Helm KW - Educational technology KW - Evaluation KW - Educational tests and measurements KW - Instructional systems KW - Desig KW - Teaching N1 - Includes index; Bibliography: 145-159 ER -