Ferguson, Eva Dreikurs <br/><br/>
Motivation: An experimental approach.   

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 - New York  Holt, Rinehart & Winston  1976 
 - xvi, 453 p. 
 -   .
<br/><br/><label>ISBN: </label>
<br/><br/><label>Dewey Class. No.: </label>152.5  / F352