000 00240nam a2200109Ia 4500
082 _aCRA
100 _aCRAWFORD, J.H.
245 _aAPPLIED PHYSICS LETTERS
260 _bAMERICAN INSTITUTE OF PHYSICS
_c1964
300 _a87
942 _2ddc
_cB
999 _c33919
_d33919