Bowie, S. H. U. (Stanley Hay Umphray), 1917-  Bowie, S. H. U. (Stanley Hay Umphray), 1917- <br/><br/>
The Bowie-Simpson system for the microscopic determination of ore minerals :  first students issue / 
S.H.U. Bowie and P.R. Simpson. 
 - London, England : Oxford ; Boston :  London, England : Oxford ; Boston :  London, England : Oxford ; Boston :  McCrone Research Associates ; distributed by Blackwell Scientific Publications,  McCrone Research Associates ; distributed by Blackwell Scientific Publications,  1980. 
<br/><br/> Cover title. 
<br/><br/>Bibliography: p. 9. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Optical mineralogy.<br/>Mineralogy, Determinative.