TY  - BOOK
AU  - Copi,Copi.
TI  - Introduction to Logic
U1  - 160 
PY  - 1967///
CY  - Nre, [s.l], [s.l], New Delhi
PB  - Prentice-HalI of India
KW  - Introduction to Logic
KW  -  Logic
ER  -