Sund, Robert B <br/><br/>
Teaching science by inquiry in the secondary school 
by Robert B. Sund and Leslie W. Trowbridge 
 - 2d ed. 
 - Columbus, Ohio  Merrill Pub.  1973 
 - viii, 631 p. :;  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0675090512 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Study and teaching (Secondary)