TY  - BOOK
AU  - A.H. Basson
AU  - D J O`Connor
TI  - Introduction to symbolic logic
U1  - 160 
PY  - 1978///
CY  - Calcutta
PB  - Oxford University Press
KW  - Introduction to symbolic logic
KW  - Logic
KW  - Philosophy
N1  - Includes bibliographical references and index
ER  -