Rishworth, D.E.H <br/><br/>
Notes on columbite mining area, Bakri, Muar, Johore 
D.E.H. Rishworth 
 -  1960 
 - 1 v. (unnumbered)  ill.  30 cm 
<br/><br/> These notes have been prepared mainly from fieldwork, and from the examination of prospecting results, undertaken by the author during 1954 and 1955. A detailed confidential report was drafted. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mineralogy--Johor--Muar
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Muar (Johor)