Stoping methods and costs in the gold mines of the Baguio district, Mountain Province, Philippines.

Stoping methods and costs in the gold mines of the Baguio district, Mountain Province, Philippines.

書誌詳細
共著者: Philippines (Commonwealth) Bureau of Mines, Philippines (Republic). Bureau of Mines
フォーマット: 図書
言語:English
出版事項: Manila [s.n. 19--]
主題:
Mines and minerals resources > Philippines.