TY  - BOOK
AU  - Copi,Irving M.
AU  - Cohen,Carl
TI  - Essentials of logic
SN  - 013238034X
PY  - 2007///
CY  - Upper Saddle River, N.J.
PB  - Pearson Prentice Hall
KW  - Logic
KW  - Textbooks
N1  - Includes index
ER  -