TY  - BOOK
AU  - COPI, IRVING M
AU  - COHEN, CARL
TI  - INTRODUCTION TO LOGIC / 
U1  - 160 
PY  - 1995///
CY  - NEW DELHI
PB  - PRENTICE HALL
KW  - LOGIC
N1  - 13 TH ED / NOIDA / DORLING KINDERSLEY / c 2010 / xviii , 686 P
ER  -