Helfman, Elizabeth S. <br/><br/>
Water for the world / 
by Elizabeth S. Helfman ; illustrated by James MacDonald. 
 - 1st ed. 
 - New York :  McKay,  c1960. 
 - 213 p. :  ill. ;  21 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 204 - 206. 
<br/><br/><label>LCCN: </label>60-10883 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hydrology.