Joanes Muda,Fredoline Javino,Alexander S.W.Yan <br/><br/>
Reconnaissance geochemical survey in the Bengkoka block area Northern Sabah (RAK E4) 

 - SB/MM/97/01 
 - Kuala Lumpur  Jabatan Mineral Dan Geosains Malaysia  1997 
 - ill:42p. 29.8 cm