Ooi, A. C. <br/><br/>
Preliminary investigation of silica sand deposits, Johore / 
by A. C. Ooi 
 - Ipoh :  Jabatan Penyiasatan Kajibumi,  1981 
 - 22 p. :  ill. 
 - Report of the Industrial Minerals Division; no.Im 1/81 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sand, Glass--Johor<br/>Investigative reporting--Johor