TY  - BOOK
AU  - COPI,I.M.
AU  - COHEN,C.
TI  - Introduction to logic
SN  - 8120309421
U1  - PHIL 160 
PY  - 1994///
CY  - New Delhi
PB  - Prentice-Hall of India
KW  - LOGIC
N1  - Includes Index
ER  -