Past :   Proceedings of the Prague workshop 1994 

 - París :   Unesco-PHI,   1996. 
 - 214p. 
 - Te .
<br/><br/><label>Subjects--Topical Terms: </label><br/>HIDROLOGIA<br/>EDUCACION
<br/><br/><label>Universal Decimal Class. No.: </label>556:37