Haag, Vincent H. <br/><br/>
Introduction to secondary mathematics  volume 2 /  [Book] : 
Vinvent H. Haag, Edwin A. Dudley. 
 - Boston :  D.C. Heath and Company,  c1967. 
 - 1 v. (various paging) ;  24 cm. 
<br/><br/> All. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Secondary).
<br/><br/><label>Dewey Class. No.: </label>510.712