National Society For The Study Of Education <br/><br/>
In Service Education For Teachers Supervisors And Administrators The Fifty Sixth Yearbook Of The National Society For The Study Of Education Part I 

 -  Chicago : U. Of Chicage Press 1957. 
 - 376 
<br/><br/><br/>Eng 
<br/><br/><label>ISBN: </label>(Hbk)