000 00318pam a2200145a 44500
082 _a621.384133
_bR545m2
100 _aRobertson, Arthur Edward
245 1 _aMICROPHONES
250 _a2nd
260 _aN. Y.
_bHayden Book
_c1963
300 _a357
650 _aMicrophone
964 _gCIRC
997 _a54332 s C
999 _c437276
_d437276