TY  - BOOK
AU  - Exner,Robert M.
TI  - Logic in elementary mathematics 
U1  - 510 EXN R  
PY  - 1959///.
CY  - New York : 
PB  - Mc Graw-Hill Book Company Inc, 
KW  - Calculus
KW  - Mathematics- Logic
N1  - Includes index.
ER  -