The orang utan :  its biology and conservation / 
edited by Leobert E. M. De Boer. 
 - The Hague :  W. Junk Publishers,  1982. 
 - xii, 353 p. :  ill. ;  25 cm. 
 - Perspectives in vertebrate science  v. 2. .
<br/><br/> 'This volume mainly consists of the contributions, presented at the'Workshop on the Conservation of the Orang Utan,' held October 1979 at Rotterdam'--T.p. verso. 
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Orangutan--Congresses.<br/>Wildlife conservation--Congresses.