00738cam a22002294a 4500 20230110145503.0 090721s1992 enka b 001 0 eng 92-009766 0077074270 : £17.95 DLC DLC DLC DLC pcc TK5101 .P42 1992 621.382 20 Petersen, David, 1931- Audio, video, and data telecommunications / David Petersen. London ; New York : McGraw-Hill Book Co., c1992. xiii, 333 p. : ill. ; 25 cm. Includes bibliographical references (p. 324-325) and index. Telecommunication. 7 cbc orignew 1 ocip 19 y-gencatlg lcc 53994 53994 0 0 lcc 0 0 RKLM RKL RKL 2023-01-10 0 0259066 2023-01-10 00:00:00 1 2023-01-10 BK VIRTUAITEM