Challenges in African hydrology and water resources / 
edited by D.E. Walling, S.S.D. Foster & P. Wurzel 
 - UK  International Association of  Hydrological Sciences  1984 
 - x, 587p.  Pbk 
<br/><br/><label>ISBN: </label>0947571051 
<br/><br/><label>LC Class. No.: </label>GB651.I5