Weilenmann, Alexander <br/><br/>
Evaluation research and social change 

 -  ; Unesco  , 1980 
 - 104p. 
<br/><br/><label>ISBN: </label>9231016997  F 30 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social Change<br/>Social Science
<br/><br/><label>Dewey Class. No.: </label>303.4  / WEI