Alex Unya Ambun <br/><br/>
Report on quarry site investigation at Pelugau area Balingian  GSKL 017/220 
by Alex Unya Ambun, Gasah Lingkai 
 -  1980 
 - 1 v.(various pagings)  ill.  30 cm 
<br/><br/> Due to scarcity of the outcrop in the hill and in particular the absence of thick sandstone beds, no attempt is being made to compute the quantity of the sandstone available in the area 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Quarries and quarrying--Balingian--Sarawak