TY  - BOOK
AU  - Cohen,Morris R.
AU  - Nagel,Ernest
TI  - An introduction to logic and scientific method
U1  - 160 
PY  - 1961///
CY  - London
PB  - Routledge & Kegan Paul Ltd
KW  - Logic
KW  - Methodology
KW  - Study and teaching
ER  -