Hershey, Robert L.,  1941- <br/><br/>
How to think with numbers 
Robert L. Hershey 
 - Los Altos, Calif.  W. Kaufmann  c1982 
 - 133 p.  ill.  23 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--1961-
<br/><br/><label>Dewey Class. No.: </label>510