TY  - BOOK
AU  - Irving M.Copl
AU  - Carl Cohen
TI  - Introducrion to logic
SN  - 8120309421
U1  - 160 
PY  - 2000///
CY  - NewDelhi
PB  - Prentice hall of India private limited
KW  - Logic
N1  - includes index
ER  -