Hayes, Samuel P.  <br/><br/>
Evaluating development projects :  Samuel P. Hayes. 
a manual for the use of field workers / 
 - 2nd ed. 
 - Paris :  Unesco,  c 1969. 
 - 116 p. ;  21 cm. 
<br/><br/>Bibliography : p. (112-116). 
<br/><br/>340  340 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Project --Evaluation.
<br/><br/><label>Dewey Class. No.: </label>309.1 / H329e