Leus-ellin, Datta <br/><br/>
Improving evaluations 

 - London  Sage Publications  1979 
 - 280p.  22cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Evaluation research (Social action programs)
<br/><br/><label>LC Class. No.: </label>H62.I54