Nievergelt, B. <br/><br/>
Ibexes in an African environment :  ecology and social system of the Walia ibex in the Simen Mountains, Ethiopia / 
B.Nievergelt. 
 - Berlin :  Springer-Verlag ,  1981. 
 - ix ,189 p. :  ill. ;  25 cm. 
 - Ecological studies  v.40. .
<br/><br/>Bibliography: p.179-186. 
<br/><br/><label>ISBN: </label>3540105921 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bouquetin.<br/>Mammals--Ethiopia--Simen Mountains.