TY  - BOOK
AU  - Exner, Robert M.
AU  - Rosskopf, Myron F.
TI  - Logic in elementary mathematics
U1  - 510.1 
PY  - 1959///
CY  - New York
PB  - Mcgraw- Hill
KW  - Mathematics --Philosophy
KW  - Logic, symbolic and mathematical
ER  -