TY  - BOOK
AU  - Copi,Irving M.
AU  - Cohen,Carl .
TI  - Introduction to logic
SN  - 8178084864
AV  - BC108 .C69 1998
U1  - 160  22nd ed.
PY  - 1998///
CY  - New Delhi
PB  - Pearson Education
KW  - Logic
N1  - Includes index
ER  -