TY  - BOOK
AU  - Rescher Nicholas
TI  - Many -  valued logic
U1  - R17, K9 
PY  - 1969///
CY  - New York
PB  - McGraw Hill U. S. A.     
KW  -  Philosophy
KW  - Logic-Scientific Method
N1  - Appendix: P 332-50
ER  -