Preuschoft, Holger. <br/><br/>
The lesser apes   evolutionary and behavioural biology. 
Holger Preuschoft 
 - Edinburg   Edinburg University Press  1984 
<br/><br/><label>ISBN: </label>0 85224 448 7 
<br/><br/><label>LC Class. No.: </label>QL 737. P96L47