Subsidence and sinkhole occurrence in Bukit Merah new village, Menglembu, Ipoh  no. E(F)5/1982 
Makmal Penyiasatan Kajibumi 
 -  1982 
 - 1 v.(various pagings)  30 cm.+  2 maps 
<br/><br/>Includes bibliographical references 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology investigation--Ipoh--Perak