Khoo Kay Khean <br/><br/>
A preliminary geological investigation of the quartz reep at Labu third mile estate Seremban Negeri Sembilan 

 - MX (N) 11 1974 
 - Ipoh Perak  Jabatan Penyiasatan Kajibumi Malaysia  1974 
 - ill:8p. 29.8 cm  Figure 2:Map of Labu third mile estate showing location of analysed samples