Anatomy, dentition, taxonomy, molecular evolution and behavior / 
Editor: Duane M. Rumbaugh. List of contributors, R. C. Arnold and others 
 - Basel :  S. Karger,  1973 
 - viii, 230 p. :  ill. ;  25 cm. 
 - Gibbon and siamang ;  v. 2 .
<br/><br/>Includes bibliographies 
<br/><br/><label>ISBN: </label>3805513410 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gibbons