The demand for trunk telephone services in Great Britain
Subtitle: the significance of quality change.
Series: Institute for the Quantitative Analysis of Social and Economic Policy, University of Toronto.  Working paper, no. 7308
Publisher: Institute for the Quantitative Analysis of Social and Economic Policy, University of Toronto.  Working paper, no. 7308
Published: 1973
Place of publication: Toronto
Language: eng
Number of pages: 23
Subjects: Telephone -- Great Britain -- Mathematical models
Notes: Bibliography: leaf [24]