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Subtitle: background and development
By: B. Shackel and D.J. Pullinger.
Contributors: Pullinger, D. J.
Series: Library andinformation research report -- 29
Publisher: British Library
Published: 1984
Place of publication: (London)
Language: eng
Number of pages: 155
Subjects: Telecommunication systems -- England.
Notes: Bibliography, p125-132.