Handbook of research methods in child development / 
Contributors: Alfred L. Baldwin [and others]. 
 - New York :  Wiley,  [1960] 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>LCCN: </label>60010321 /L/r882 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Child psychology -- Methodology.--Child psychology -- Methodology.<br/>Psychology -- Research.--Psychology -- Research.
<br/><br/><label>LC Class. No.: </label>BF722  / .M85 
<br/><br/><label>Dewey Class. No.: </label>136.7018