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
621.31922 J67 SH1998
Johnson K S Transmission circuits for telephonic communication methods of analysis and design Lancaster WEastern Electric 1924 viii,326p. * Telephone Transmission circuits