United Nations. Development of Groundwater Resources with Special Reference to Deltaic Areas. Bangkok, 24 April-8 May 1962 <br/><br/>
Transactions   

 - New York  UNESCO  1963 
 - viii, 244p. 
<br/><br/>  
<br/><br/><label>Subjects--Index Terms: </label>
<br/><br/><label>Dewey Class. No.: </label>628.11063  / Un58.TR