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

Podrobná bibliografie
Korporace:	Philippines (Commonwealth) Bureau of Mines, Philippines (Republic). Bureau of Mines
Médium:	Kniha
Jazyk:	angličtina
Vydáno:	Manila [s.n. 19--]
Témata:	Mines and minerals resources > Philippines.