Rosenthal, Ricky <br/><br/>
The sign of the ivory horn  Eastern African civilizations 
by Ricky Rosenthal 
 - Dobbs Ferry, N.Y.  Oceana Publications  1971 
 - 162p. ill. 22cm 
<br/><br/> Includes index 
<br/><br/>Bibliography: p.147-155 
<br/><br/><label>ISBN: </label>0379004496 
<br/><br/><label>LCCN: </label>70-132279 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Africa, Eastern--History