The Economic effects of value-added and data services
By: Department of Trade and Industry.
Contributors: Great Britain. Dept. of Trade and Industry.; Vanguard (Program)
Publisher: H.M.S.O.
Published: 1987
Place of publication: London
Language: eng
Number of pages: 61
Subjects: Technological innovations -- Economic aspects.; Data transmission systems.
Notes: On t.p.: Vanguard.