UNESCO <br/><br/>
Textbook on hydrology 
UNESCO 
 -  1970 
 - p.  cm. 
 - Technical papers in hydrology .
<br/><br/><label>Standard No.: </label>49580 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>External Dynamic
<br/><br/><label>Dewey Class. No.: </label>H422a, L0