Siner, Helen B. <br/><br/>
Practical mathematics :  decimals, ratios, proportions, and percents / 

 - Menlo Park, Calif. :  Cummings Pub. Co.,  [1975] 
 - 104 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>084656713X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic.
<br/><br/><label>Dewey Class. No.: </label>512 CUM 1975 A032 Or.  513/.2