P C Aw & A C Ooi <br/><br/>
Quarries sanpits and brickworks operating in 1976 in Peninsular Malaysia (RAK F2) 

 - MX(N) 9 1977 
 - Ipoh Perak  Jabatan Penyiasatan Kajibumi Malaysia  1977 
 - ill:28p. 29.8 cm  Figure 1:Location of quarries sand pits brickworks and kaoline mine in Kedah & Perlis