00424nam 2202541 45000010005000000030023000050050009000280080041000370820008000780720027000860200018001131000019001312600024001502500006001742450027001806500027002076500010002342541StarLibrary Marc Built20180420201711 ||||| |||||||||||amh  a621 aDigital Communications a0-07-113814-5 aJohn G.proakis bMC GRAW,HILL c1995 a5 aDigital communications aDigital Communications atitle