TY  - BOOK
AU  - Lewis Clarence Irving
AU  -  Langford Cooper Harold
TI  - Symbolic logic
U1  - R14, J9 
PY  - 1959///
CY  - New York
PB  - Dover U. S. A.      
KW  - Philosophy-Symbolic Logic
N1  - Appendix: P 486-514
ER  -