TY  - BOOK
AU  - Schaaf,William L.
AU  - 
TI  - Basic concepts of elementary mathematics 
U1  - 510/SCB 
PY  - 0000///Wiley
PY  - 1966///
CY  - N.Y. 
KW  - Mathematics .
KW  - Mathematics
N1  - Includes index
ER  -