Farr, R. E. Telecommunications traffic, tariffs, and costs : an introduction for managers / R. E. Farr. - London, U.K. : P. Peregrinus on behalf of the Institution of Electrical Engineers, 1988. - 206 p. : ill. ; 24 cm. - IEE telecommunications series ; 19 . Includes index. Bibliography: p. [177]-178. ISBN: 0863411452 RM259.72 LCCN: 89-129521 Subjects--Topical Terms: Telecommunication--Traffic.Telecommunication--Costs.