00481pamaa2200169 4500 0000014309 20110420090000.0 0201516519 621.382 STR TK5103 STR 1990 STREMLER Introduction to communication systems Ferrel G. Stremler. 3rd ed. Massachusetts: Addison Wesley, 1990. ix, 757p.: ill.; 24cm. Data transmission systems Telecommunication systems