000 00283nam a22001097a 4500
082 _a621.382 HAN'I
100 _aHANCOCK, JOHN C
_957369
245 _aAN INTRODUCTION TO THE PRINCIPLES OF COMMUNICATION THEORY
260 _aNEWYORK
_bMCGRAW HILL
_c1961
300 _a253P
942 _cBK
999 _c567658
_d567658