Second meeting of the Eastern African Sub-Committee for soil correlation and land evaluation, Addis-Ababa, Ethiopia, 25 - 30 October 1976 

 - Rome :  FAO,  1977 
 - World Soil Resource Reports;  47 .
<br/><br/> kepunyaan PTSL 
<br/><br/><label>ISBN: </label>9521004080