000 00319nam a2200121Ia 4500
008 190711s9999 xx 000 0 und d
082 _a629.244 H474
100 _aHELDT,P.M
245 0 _aTORGUE CONVERTERS OR TRANSMISSIONERS
260 _aPhiladelphia
_bChilton Book Company
_c1955
300 _a22X14
942 _cBK
_2DDC
999 _c11685
_d11685