TY  - BOOK
AU  - Hempel,Carl G.
TI  - Philosophy of natural science
T2  - Prentice-Hall foundations of philosophy series
AV  - Q175 .H3949
U1  - 501 
PY  - 1966///]
CY  - Englewood Cliffs, N.J.
PB  - Prentice-Hall
KW  - Science
KW  - Philosophy
N1  - Includes bibliographical references
ER  -