Water resources of arid areas :  proceedings of the international conference on water resources of arid and semi-arid regions of Africa, Garborone, Botswana, 3-6 August 2004 / 
edited by D. Stephen, E. M. Shemag & T. R. Chaoka 
 - Leiden ;  London :  A. A. Balkema,  c2004 
 - xi, 576 p. :  ill. ;  26 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780415359139 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water-supply--Congresses<br/>Water resource development--Congresses