Sumner, Claude. <br/><br/>
Ethiopian Philosophy :  An Analysis, Volume III The treatise of Zar'a  Ya'eqob and of Walda Heywat / 
by Claude Summer, Ph.D. Agr|g| of the International center of Logic, Professor of philosophy and chairman of the department of philosophy at the Addis Ababa University, Addis Ababa. 
 - Adiss Ababa :  Commercial printing press,  1978. 
 - ix, 367 p ;  24 cm. 
<br/><br/> Includes bibliography and indexes. 
<br/><br/><label>Dewey Class. No.: </label>ETH 100.63 Sum 1978 V.III