Human factors studies of the design and use of push-button telephone keysets
By: by R.L. Deininger.
Contributors: Bell Telephone Laboratories.
Series: Bell Telephone System technical publications -- monograph 3643
Publisher: Bell Telephone Laboratories
Published: 1960
Place of publication: New York
Language: eng
Number of pages: 18
Subjects: Telephone -- Equipment and supplies.; Human engineering.
Notes: Cover title.

Includes bibliographical references.

"Published in: The Bell System technical journal, vol. 39, pp. 995-1012, July,1960"--P. [2] of cover.