000 00264pam a2200109a 44500
082 _a621.381
_bB56M
100 _aBlack, Harold S.
245 1 _aMODULATION THEORY
260 _aNew Jersey
_bD.Van Nostrand Company, Inc.
_c1953
964 _gCIRC
997 _a7663 s C
999 _c416224
_d416224