Understanding communications systems /
written by Don L. Cannon, Gerald Luecke ; with contributions by Charles W. Battle [et al.].
- 2st. ed., 4th printing.
- Indianapolis : Howard W. Sams & Co., cop. 1984.
- IV, 284 s. : wykr., fot., rys., tabl. ; 23 cm.
- Sams Understanding Series .
- Sams Understanding Series .