TY  - BOOK
AU  - Copi, Irving M..
TI  - Introduction to logic / 
SN  - 81-7808-486-4
U1  - R1 
PY  - 2001///
CY  - Delhi : 
PB  - Pearson Education(Singapore) Pte.ltd., Indian Branch , 
KW  - Philosophy- Logic
ER  -