Report of investigation. no.1- 1951-.

Sonraí bibleagrafaíochta
Údar corparáideach:	Philippines (Republic). Bureau of Mines
Formáid:	LEABHAR
Teanga:	Béarla
Foilsithe / Cruthaithe:	Manila [s.n. 19--]
Ábhair:	Mines and mineral resources > Philippines.