Regional aquifer systems in arid zones managing non renewable resources :  proceedings of the international conference Tripoli, Libya, 20-24 November 1999 

 - Paris :  UNESCO,  2001. 
 - ix, 501+p. ;  26 cm. 
 - IHP-V Technical Documents in Hydrology No.42 .
<br/><br/><label>Dewey Class. No.: </label>627.17 REG  / 1902