TY  - BOOK
AU  - Copi,Irving M
AU  - Cohen,Carl
AU  - Copi,Irving M.
TI  - Solutions to exercises: introduction to logic 
AV  - BC108 .S658 1982
PY  - 1982///
CY  - New York, London
PB  - McMillan Pub. Company
KW  - Logic
N1  - 2
ER  -