TY  - BOOK
AU  - Copi,Irving M.
AU  - Cohen,Carl
TI  - Introduction to logic
SN  - 9788120309425
U1  - 160 
PY  - 2001///
CY  - New Delhi
PB  - Prentic-Hall of India
KW  - Philosophy
KW  - Logic
N1  - Include index
ER  -