Smith,James A <br/><br/>
Arithmetic Of The Whole Numbers: A Programmed Unit 

 - U.S.A:  Encyclopaedia Britanica Films Inc,  1962. 
 - 88p.;  22cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>General principles of mathematics
<br/><br/><label>Dewey Class. No.: </label>511.1  / SMI