Proceedings Regional Workshop on Impact of Man's Activities on Tropical Upland Forest Ecosystems / 
edited by Yusuf Hadi ... et al. 
 - UPM, Serdang :  Faculty of Forestry,  1989. 
 - 694 p. :  ill. ;  26 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Forest and forestry--Social aspects--Congresses.