BERGMANN HELLMUTH <br/><br/>
GUIDE TO THE ECONOMIC EVALUATION OF IRRIGATION PROJECTS 

 -  1976 
<br/><br/><label>ISBN: </label>92-64-11483-1 
<br/><br/><label>LC Class. No.: </label>333.913/BER  / 4 
<br/><br/><label>Dewey Class. No.: </label>333.913/BER  / 4