The introduction of rainwater catchment tanks and micro-irrigation to Botswana 

 - London  Intermediate Technology Development Group Ltd (ITDG)  1969 
 - 74p.  29cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>LC Class. No.: </label>QTO HD1741.B63I8