Groundwater resources of the world  [material cartográfico] 

, Escala: 1:50'000,000 
 - HannoverParis :  UNESCO :  Commission de la carte géologique du monde(CCGM) :  International association of hydrogeologists(IAH) :  International atomic enercy agency(IAEA) :  German federal institute for geosciences and natural resources(BGR) ,  2004 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Eau souterraine<br/>Monde
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Monde