00419nam a2200157Ia 450000500170000000800410001704100120005808200150007010000200008524500540010525000080015926000250016750000150019265000310020770000230023820240823055246.0240823s9999||||xx |||||||||||||| ||und||  aENGLISH  A621.382 M7  a"Pierce,John R" 0aIntroduction to Communication Science and Systems  a1st  c1987b"Khanna,Delhi"  aTransfered  aCommunicationbElectronics  a" Posner,Edward C"