TY - BOOK AU - Freeman,Roger L. TI - Telecommunication system engineering SN - 0471634239 AV - TK5103 .F68 1989 U1 - 621.382 20 PY - 1989/// CY - New York PB - Wiley KW - Telecommunication systems KW - Design and construction KW - Telephone systems N1 - "A Wiley-Interscience publication."; Includes bibliographical references and index ER -