Published by From: Transactions Amer Inst Mining & Metallugical Engrs, Mining Practice, Vol 131, 1939
Seller: Larry W Price Books, Portland, OR, U.S.A.
Pamphlet. Condition: Very Good. pp. 53-64, Illus, Extracted from orig vol, begins with title page, trimmed & stapled, thus it is like a pamphlet, VG.