Kueh Khai Soon <br/><br/>
Silica sand deposit in the northeast of kpg Sebat Sematan Sarawak : RAK (E11) 

 - JMG.GSKL 01/2/15 
 - Ipoh Perak  Jabatan Penyiasatan Kajibumi Malaysia  1991 
 - ill:7p. 29.8 cm