Schaller, George B. <br/><br/>
The year of the gorilla  an exploration 
George B. Schaller 
 - Harmondsworth  Penguin Books Ltd.  1967 
 - 258 p. : ill. ; 19 cm. 
<br/><br/>Bibliography: p.259-260 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Natural history--Africa, East<br/>Natural history--Africa, Central