Ong, Wee Seck <br/><br/>
A geological investigation on the limestone hills of G.Keroh, G. Merawan, G. Karang Besar and G. Karang Kecil, Simpang Pulai Area, Kinta District, Perak / 
by Ong Wee Seck 
 - Ipoh :  Ibu Pejabat Penyiastan Kajibumi,  1977 
 - 46 p. :  ill. 
 - A report of the Industrial Mineral Division ; no.MX(N)7/1977 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Limestone--Perak<br/>Mountains--Perak<br/>Investigative reporting--Perak