Instructional technology : its nature and use - Wittich, Walter Arno, 1910-; Schuller, Charles Francis (New York : Harper & Row, 1973)
First-4th ed. published under title: Audiovisual materials.
Supplemented by: "Student production guide/ Walter A. Wittich...[et al.]" (308 p. : ill. ; 24 cm.) published: New York, Harper & Row, 1975. 5th ed. Call number: LB1028.3.W57 1973 Suppl.
Includes bibliographies.
Keywords: Educational technology