Gold prospecting

類似資料

• Prospecting and operating small gold placers /
  著者:: Boericke, William Fay, 1884-
  出版事項: (1936)
• Prospecting and operating small gold placers /
  著者:: Boericke, William F.
  出版事項: (1936)
• Gold deposits of the world : with a section on prospecting /
  著者:: Emmons, William H. (William Harvey), 1876-
  出版事項: (1974)
• Gold-mining, metallurgy and geology /
  出版事項: (1984)
• World gold : mines-deposits-discoveries /
  著者:: Elevatorski, Edward A.
  出版事項: (1988)