Ullendorff, Edward. <br/><br/>
The Semantic languages of Ethiopia :    a comparative phonology. 

 - London :    Taylor's (foreign) Press,    1955. 
 - xiv, 273 p. :    ill., fold. col. map ;    23 cm. 
<br/><br/>Includes bibliographical notes : p. 233-239. 
<br/><br/><label>Subjects--Geographic Terms: </label><br/> Ethiopian languages -- Phonology.
<br/><br/><label>Dewey Class. No.: </label>492.9