00619nam a22001931 4500 1/5462 941213s1966 enk 001 eng d 5745 DLC GR-PeUP 191 HE Hempel, Carl G. Philosophy of Natural Science/ Carl G.Hempel Englewood Cliffs: Prentice-Hall, c1966 ix,116p.; 23cm. Foundations of philosophy series ; Includes index Philosophy Natural Science. Foundations of philosophy series. INST UNIPILB MAIN 20040709 191 HE 00121562 00121562 LOAN 13 1