De Groof, H.H.,  <br/><br/>
Shifting cultivation in Julau District, 6th Division, Sarawak  preliminary report 
H. H. de Groot, N. Nolten, J. van Teern. 
 - University of Utrecht, Utrecht:   Department of Geography,   1987. 
 - 21 pages;   32 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Shifting cultivation--Sarawak.