Alemu Biftu. <br/><br/>
Wetetama yeamerar hidet :  kekrstaniawi sra askiajnet wede metshaf kidusawi merinet teshegagru / 

 - Addis Ababa :  SIM,  2004. 
 - 232 p. 
<br/><br/><label>Dewey Class. No.: </label>ETH 658.409 Ale 2004