The first five years of life :  a guide to the study of the preschool child, from the Yale clinic of child development. 

 - [9th ed.] 
 - New York ;  London :  Harper & brothers,  c1940. 
 - xiii, 393 p. :  ill., pl., diagrs. ;  24 cm. 
<br/><br/>Bibliography: p. 369-376. 
<br/><br/><label>LCCN: </label>51048838 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Child psychology.<br/>Learning, Psychology of.<br/>Psychophysiology.
<br/><br/><label>LC Class. No.: </label>BF721  / .Y3 1940a