TY  - BOOK
AU  - Copi,Irving M..
TI  - Symbolic logic / 
SN  - 9788120309708
U1  - 511.3 
PY  - 2009///
CY  - New Delhi : 
PB  - PHI Learning , 
KW  - LOGIC, SYMBOLIC
N1  - Includes index
ER  -