PLATTS, MARY E. <br/><br/>
PLUS :   A HANDBOOK FOR TEACHERS OF ELEMENTARY ARITHMETIC 
MARY E. PLATTS 
 - MICHIGAN :   EDUCATIONAL SERVICE ;  1964. 
 - 205 p.  22 cm. 
<br/><br/>Incluye referencias bibliográficas 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ARITMETICA
<br/><br/><label>LC Class. No.: </label>QA115  / P53