Mans influence on the hydrological cycle :  a draft report of the UNESCO /FAO working group on the international hyerological decade / 
Food and Agriculture Organization. 
 - Rome :  Food and Agriculture Organization ,  1973. 
 - 71 p. :  ill.;  32 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hydrology.
<br/><br/><label>Dewey Class. No.: </label>551.46  / FOM 1973