Letters

• 1 June 1974
• journal article
• departments
• Published by Springer Nature in Educational Technology Research and Development
• Vol. 22  (2) , 222-224
• https://doi.org/10.1007/bf02768623

Abstract

Keywords

• MAIN ENTRY
• AMERICAN NATIONAL STANDARD INSTITUTE
• REVIEW SYMPOSIUM
• AUDIOVISUAL MATERIAL
• CUSTOMER IDENTIFICATION