Organizational aspects of a natural shallow wells   : pragramme in Tanzania 

 - n.p.  n.p.  n.d. 
 - 18p.  : ill.  ; 30cm. 
<br/><br/>Includes references 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Shallow wells<br/> Tanzania
<br/><br/><label>LC Class. No.: </label>GY QE148.T34N3