000			00460pam a2200145a 44500
082			_aBTS _bMONO B-677
100			_aSivian,L J
245	1		_aSOUND DIFFRACTION BY RIGID CIRCULAR PLATE, SQUARE PLATE AND SEMI-INFINITE SCREEN
260			_a _b _c1931
300			_a28
500			_aBound With Bts Mono B-643-76,682-96 Lack No.648-50,653,657,659,662-65,668,671,675,677-81,683-84,688-92,694-95
700			_aO'Neil,H T
964			_gCIRC
997			_aTR17630 C
999			_c399779 _d399779