TY  - BOOK
AU  - Copi, Irving M
AU  - Copi,Irving M
TI  - Introduction to Logic
SN  - 9788131788653
U1  - 160 
PY  - 2012///
CY  - Delhi 
PB  - Pearson 
KW  - Logic
N1  - includes index and biblioraphy; Index
ER  -