World Environmental Library [Elektronische Ressource]   A Cooperative Project to Provide Environmental Information to All 
Human Info NGO & GTZ / BMZ-WEL 
 - 1 CD-ROM ; 2 S. Beil. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Umwelt<br/>Entwicklung<br/>Landwirtschaft<br/>Gesundheit<br/>Natur<br/>Wasser<br/>Energie