Voice communications
By: editor, Bert Heath.
Contributors: Heath, Bert.
Series: Communications research trend series ;; v. 3; Research trend series
Publisher: Computer Intelligence
Published: 1991
Place of publication: La Jolla, CA (3344 N. Torrey Pines Ct., La Jolla 92037)
Language: eng
Number of pages: 193
Subjects: Telephone supplies industry -- United States.; Telephone -- United states.; Telephone systems.; Market surveys -- United States.