Alper, P.    Armitage, P. H. and Smith, C. S. <br/><br/>
Educational models, manpower, planning and control   

 -  1967 
 - 93-103p. 
 - Reprint series    no.17 .
<br/><br/>  
<br/><br/><label>Dewey Class. No.: </label>SF  /