TY - BOOK AU - Schoenbeck,Robert J. TI - Electronic communications: modulation and transmission SN - 0675204739 AV - TK5101 .S26 1988 U1 - 621.382 22nd ed. PY - 1988/// CY - Columbus PB - Merill Publishing KW - Communication in engineering KW - Electronics KW - Electric engineering N1 - Includes index ER -