Strokes , Ralph <br/><br/>
A text-book of Rand metallurgical practice,  designed as a "working tool" and practical guide for metallurgists upon the Witwatersrand and other similar fields, 
Ralph Strokes....etal. 
 - 3rd ed (revised). 
 - London :  C. Griffin & Company,  1926. 
 - xiii ,564p. :   ill. ;  24 cm. 
<br/><br/> Includes Index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gold--Metallurgy.