Water in the unsaturated zone 

 - Bélgica :   IASH,   1970. 
 - 525p; 25cm 
 - Studies and reports in hydrology, 2. .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hidrología
<br/><br/><label>Universal Decimal Class. No.: </label>556