Teaching and media :
Gerlach Vernon S.
Teaching and media : A systematic approach / Vernon S.Gerlach and Donald P.Ely. - New Jersey : Prentice-Hall,INC, 1971. - xiii, 392 p. : ill. ; 23 cm.
138913331
371.1GER
Teaching and media : A systematic approach / Vernon S.Gerlach and Donald P.Ely. - New Jersey : Prentice-Hall,INC, 1971. - xiii, 392 p. : ill. ; 23 cm.
138913331
371.1GER