TY  - BOOK
AU  - Basson,A.H..
AU  - O`Connor,D.J..
TI  - Introduction to symbolic logic / 
SN  - 0195607961
U1  - 511.3 
PY  - 1999///
CY  - Kolkata : 
PB  - Oxford University Press , 
KW  - SYMBOLIC LOGIC
N1  - This book simeltineously published from Oxford, New york, Athens, Auckland, Bangkok, Bogota
ER  -