Online Public Access Catalogue (OPAC)Library,Documentation and Information Science Division
“A research journal serves that narrow
borderland which separates the known from the unknown”
-P.C.Mahalanobis
621.38 American Telephone and Telegraph Company., Long Lines Dept. Principles of electricity applied to telephone and telegraph work; a training course text prepared for employees of the Long Lines Department, American Telephone and Telegraph Company, January, 1953. [New York, 1953] 354 p. illus. 28 cm. * Telephone. Telegraph. Electricity.