TY  - BOOK
AU  - Copi,Irving M.
AU  - Cohen,Carl
TI  - Introduction to logic / 
SN  - 9788120324961
U1  - 160 COI 23
PY  - 2007///
CY  - New Delhi
PB  - Prentice Hall of India, 
N1  - Includes index and glossary
ER  -