TY  - BOOK
AU  - Copi, Irving M.
AU  - 1. Cohen, Carl,  2. McMahon, K. D. (Kenneth D.)
TI  - Introduction to logic
SN  - 9788131788653
U1  - 160 
PY  - 2011///
CY  - New Delhi
PB  - Pearson
KW  - Logic --Textbooks
N1  - Includes index
ER  -