TY  - BOOK
AU  - Louis Toft .
TI  - Practical mathematics: decimals, ratios, proportions, and percents 
SN  - 084656713X
U1  - 510.2462 
PY  - 1942///]
CY  - Menlo Park, Calif.
PB  - Cummings Pub. Co.
KW  - Arithmetic
KW  - MCE
N1  - 0; 0; 0; 510_246200000000000_TOF
ER  -