Progress Reports
Subtitle: Metallurgical Division. 39. Ore-Testing Studies. ii. Primarily Precious Metals.
Contributors: Leaver, E.S.; Woolf, J.A.; Towne, A.P.
Series: Report of investigations (United States. Bureau of Mines) -- 3515
Publisher: s.n
Published: 1940
Place of publication: S.l
Language: eng
Notes: 1