Hydrological problems arising from the development of energy :  a preliminary repor / 
by George H. Davis; A. L. Velikanov. 
 - París :  UNESCO,  1979. 
 - 32 p. :  il. 
 - Technical papers in hydrology ;  17 .
<br/><br/><label>ISBN: </label>9231016857 
<br/><br/><label>No. de Clasificación Universal Decimal: </label>620.91: 551.49 =20 HYD No.17.