Hill George E <br/><br/>
Management and improvement of guidance. 

 - New York     Appleton-Century-Crofts        1965 
 - xv,508p  cm. 
<br/><br/><label>Standard No.: </label>34125 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>T:8, K5