Hartung, Maurice L. <br/><br/>
Seeing through arithmetic :  workbook edition /  by Maurice L. Hartung...[et.al.] 

 - Illinois ,  Scott, Foresman  1968. 
 - 4 v. :  ill. ;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic--Study and teaching (Elementary)
<br/><br/><label>Dewey Class. No.: </label>372.7