TY  - BOOK
AU  - Exner,Robert M.
AU  - Rosskopf,Myron F.
TI  - Logic in elementary mathematics
U1  - 510 EXN  
PY  - 1959///.
CY  - New York : 
PB  - McGraw-Hill Book Company, Inc., 
KW  - Mathematical logic
ER  -