TY  - BOOK
AU  - Copi, Irving M.
AU  - Cohen, Carl,
TI  -  Introduction to logic
SN  - 0130102024
U1  - 160  21
PY  - 1998///
CY  - Upper Saddle River, NJ
PB  - Prentice Hall
KW  - Logic
KW  -  Textbooks
N1  - Includes bibliographical references and index
ER  -