Eicholz, Robert E. <br/><br/>
Investigating School Mathematics / 
Robert E. Eicholz,  Phares G. O'Daffer,  Charles R. Fleenor. 
 - 2nd ed. 
 - Menlo Park, California :  Addison-Wesley Pub. Co.,  c1976. 
 - 377 p. :  ill. (col.) ;  24 cm. 
<br/><br/> Includes index.  Includes glossary. 
<br/><br/><label>ISBN: </label>0201095602 
<br/><br/><label>Dewey Class. No.: </label>513.132  / EIC