TY - BOOK AU - Freeman,Roger L. TI - Telecommunication system engineering: analog and digital network design SN - 0471029556 PY - 1980/// CY - New York PB - Wiley KW - Telecommunication system KW - Design and construction KW - Telephone systems N1 - "A Wiley-Interscience publication."; Includes bibliographical references and index ER -