Sigel I E <br/><br/>
Logical thinking in children   Research based on piaget's theory 

 -  1968 
<br/><br/><label>Standard No.: </label>83,885 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PSYCHOLOGY
<br/><br/><label>Dewey Class. No.: </label>S1:44, K8-;1