The ecology of Sumatra / 
Anthony Whitten ... [et al.] 
 - 2nd ed. 
 - Yogyakarta :  Gadjah Mada University Press,  1987 
 - 583 p. :  ill. ;  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology--Indonesia--Sumatra