Davies, Delwyn G.,  1908- <br/><br/>
Fresh water / 
Delwyn Davies 
 - London :  Aldus books,  1967 
 - 4-155 p. :  ill. (some col.), col. maps. ;  28 cm. 
 - Modern knowledge .
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> Rs. 32.60 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water-supply--Juvenile literature
<br/><br/><label>Dewey Class. No.: </label>628.1