00281nam a2200109Ia 4500082001900000100002100019245005200040260003400092300001700126500000500143700002300148  a510.9bB694.TS  aBolzano, Bernard  aTheory of sciencebcEd. and tr. by Rolf George  aOxfordbBasil Blackwellc1972  axlvii, 399p.  a  aGeorge, Rolf ; ed.