TY  - BOOK
AU  - Copi,I.M.
AU  - Cohen,Carl
TI  - Introduction to logic
SN  - 0-02-324880-7
U1  - 160 
PY  - 1972///
CY  - New Delhi
PB  - Prentice-hall
KW  - Philosophy
KW  - Logic
N1  - includes index
ER  -