TY  - GEN
AU  - Copi,Irving M.
AU  - Cohen,Carl
TI  - Introduction to Logic
SN  - 8120309421
U1  - 160  22
PY  - 2000///
CY  - New Delhi
PB  - Prentice Hall
KW  - Logic
N1  - Includes Index (p. 719-729)
ER  -