Trends in US telephone systems.
Contributors: Predicasts, inc.
Series: Market report / Predicasts,; M504; Market report (Predicasts, inc.) ;; M504.
Publisher: Predicasts
Published: 1983
Place of publication: Cleveland, Ohio
Language: eng
Number of pages: 99
Subjects: Telephone -- United States.
Other titles: Trends in U.S. telephone systems.
Notes: Cover title.
"October 1983"--Leaf i.