Powell, J.M; Riverti Femandez, S. <br/><br/>
Livestock and sustainable nutrient cycling in mixed farming systems of Sub Saharan Africa: Proceedings of an International Conference International Livestock Centre for Africa (ILCA) Addis Ababa, Ethiopia, 22-26 November, 1993. 

 - Addis Ababa :  ILCA,  1993. 
<br/><br/> Volume II: Technical Papers. 
<br/><br/> This volume examines socio-economic constraints to crop livestock integration, animal feed issues and the use of animal manure. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nutrients.<br/>Sub Saharan Africa -- Livestock -- Mixed farming.--Sub Saharan Africa -- Livestock -- Mixed farming.--Sub Saharan Africa -- Livestock -- Mixed farming.