An illustrated description of these valuable deposits and the methods of mining. (1400 w.)
Sapphire mining, Yogo, Montana
Min Sci Pr
1901
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
TIBKAT | 1975
|TIBKAT | 1991
|Tetsudô gijutsu yôgo jiten ; [Hauptbd.]
TIBKAT | 1997
|Tetsudō senro doboku yōgo ei yakushū
TIBKAT | 1970
|