Powell , J .M / Fernan dez -Rivera, S. ETAL <br/><br/>
Livestock and sustainable nutrients cyling in mixed farming systems of Sub-Saharan African Vol. 1 : Conference Summary 

 - Addis Ababa  Int. Livestock Centre for Africa  1993 
 - vii, 50p  pbk 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Livestock -Breeding -Africa --Sub --Sahara<br/>Agricultural Systems - Mixed -Africa -Sub Sahara