Sulong Enjop,Yusuf Bujang <br/><br/>
Drilling for deep groundwater resource in Bintulu area Sarawak : RAK (E11) 

 - GSKL 0367/20/250 
 - Kuala Lumpur  Jabatan Penyiasatan Kajibumi Malaysia  1992 
 - ill:42p. 29.8 cm  Drilling for deep grounwater resource in Bintulu area Sarawak