Ilg,  Frances L,  Ames, Louise B & Baker Sindey M <br/><br/>
Child behavior 

 - Harper & Row, New York  1982 
 - viii,360p 
<br/><br/><label>ISBN: </label>0-06-463547-3 
<br/><br/><label>Dewey Class. No.: </label>136.73 Ilg