Rubenach,, Jacques Division structures, content, methods and techniques of education Audiovisual equipment in education : can international harmonisation be achived / Jacques Rubenach

Audiovisual equipment in education : can international harmonisation be achived / Jacques Rubenach . - Paris : Uneco, 1979 . - 28 p. 30 cm . - (Division of structures, content, methods and techniques of education)
371.68