Engelmann, Siegfried.
Direct Instruction. - Educational Technology Publications 1980 - XII, 111 P. ; 23 CM.
THE INSTRUCTIONAL DESIGN LIBRARY ; V.22
Includes bibliographical references.
877781427
372.41 ENG 1980
Direct Instruction. - Educational Technology Publications 1980 - XII, 111 P. ; 23 CM.
THE INSTRUCTIONAL DESIGN LIBRARY ; V.22
Includes bibliographical references.
877781427
372.41 ENG 1980