WARD R C <br/><br/>
Principles of hydrology 
WARD R C 
 - London  McGraw-Hill            1967 
 - 402p  cm. 
 - NLI Research Studies Series No.131/2018 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>U22, K7