Blackwood, Paul E. <br/><br/>
How children learn to think /  
Paul E. Blackwood. 
 - Washington :    U.S. Department of Health, Education and Welfare,    1957. 
 - 19 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Thought and thinking.<br/> Reasoning.
<br/><br/><label>Dewey Class. No.: </label>370.153 BLA