TY  - BOOK
AU  - Copi, Irving.M
TI  - Symbolic logic
SN  - 81-203-0970-7
U1  - 511.3 COP 
PY  - 1999///
CY  - NEW DELHI
PB  - PRENTICE HALL
KW  - LOGIC AND LANGUAGE LOGIC AND RELATION
ER  -