00617nac a22001691u 4500 0130812234 621.382 C853 130 130 Couch, Leon II Digital and analog communication systems/ Leon W. Couch II 6th ed. New Jersey Prentice Hall 2001 Telecommunication systems Digital communications BB 621.382 C853 130 130 0 0 0 0 MAIN MAIN 1ST 2006-01-26 Purchase 4 20 621.382 COU 000004630 2025-07-15 00:00:00 2012-04-17 250.00 BB