Heng <br/><br/>
Proceedings of the 20th Geological Conference, 1989  Technical Papers 
Yin Ee Heng 
 - Vol. 1 
 - Kuala Lumpur, Malaysia  Geological Survey  1989 
 - v, 268p.  ill.  26 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geological Survey--Proceeding--Malaysia