Sience and technologie for international devlopment. <br/><br/>
More water for Arid lands  Promising Technologies and Research Opportunities. 

 -  National Academy of Sciences  1974 
 -  Couv.ill.en coul.  15 x 22 cm   
<br/><br/> Little Known but promising technologies for the use and conservation of scarce water supplies in arid areas are the subject of this report. Not a technical handbook, it aims to draw the attention of agricultural and commmmunity officials and researchers to opportunities for development projects with probable high social value.Le présent rapport traité de technique peu connues mais prometteuses pour l'utilisation et al conservation des ressources aquatiques insuffisantes dans les zones arides.   
<br/><br/><label>Mots-clés libres: </label>water conservation, L'eau de Pluie, Agriculture.