TY  - BOOK
AU  - Cohen,Morris Raphael
AU  - Nagel,Ernest
TI  - Introduction to logic and scientific method
AV  - BC108 .C67
U1  - 160 22
PY  - 1934///
CY  - New York
PB  - Harcourt, Brace
KW  - Logic
KW  - Methodology
N1  - "First edition."; Includes bibliographies
ER  -