TY  - BOOK
AU  - Copi, Irving M.
AU  - Cohen, Carl,
TI  - Introduction to logic
SN  - 8120309421
U1  - 160 22
PY  - 1996///
CY  - New Delhi
PB  - Prentice-Hall of India
KW  - Logic
N1  - Includes index
ER  -