Jones, C. R. <br/><br/>
The geology and mineral resources of the Grik area, Upper Perak / 
by C. R. Jones 
 - Ipoh :  Geological Survey Headquarters,  1970 
 - 144 p. :  ill. 
 - District memoir;  11 .
<br/><br/> Coloured geological map and another sheet showing three coloured geological sections across parts of the area are contained in the pocket attached inside the back cover 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Perak<br/>Mines and mineral resources--Perak