Proceeding on economic and optimum utilisation of irrigation supplies 

 -  1961 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>58812 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Irrigation supplies
<br/><br/><label>Dewey Class. No.: </label>D2,4p2:N57, K1        CS