BERGMANN,  HELLMUTH.    HELLMUTH, BERGMANN AND JEAN  -MARC  BOUSSARD. <br/><br/>
GUID TO THE ECONOMIC EVALUATION OF IRRIGATION PROJECTS 

 - 1ST 
 - PARIS,  ORGANISATION FOR ECONOMIC CO-OPERATION AND DEVELOPMENT:  1976. 
<br/><br/><label>ISBN: </label>9264114831 
<br/><br/><label>Dewey Class. No.: </label>631 .1 BER