Patterns in mathematics 
Bernard H. Gundlach... (et al.) 
 - River Forest, Ill.  Laidlaw Brothers  1972 
 - 352p. ill.(col.) 25cm. 
 - The understanding mathematics program .
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0844514438 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--1961-