Helmstadter, G. C <br/><br/>
Research concepts in human behavior  education, psychology, sociology 
by G. C. Helmstadter 
 - Appleton-Century-Crofts : New York  1970 
 - xv, 448 p. : illus. ; 25 cm. 
<br/><br/>Bibliography: p. 415-427. 
<br/><br/><label>ISBN: </label>0390434728 
<br/><br/><label>LCCN: </label>78-112334 //r82 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Research