Central institute of research and training in public cooperation  <br/><br/>
School in the community / 
Central institute of research and training in public cooperation 
 - n.p, 1972 
 - vi, 182p 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education
<br/><br/><label>Dewey Class. No.: </label>371  / CEN.S