Small-scale gold mining a geographic perspective of the use and development of a mineral resource

书目详细资料
主要作者:	Bayle, Romeo L.
格式:	Thesis
语言:	English
出版:	1999.
主题:	Gold mine and mining > Philippines > Gumaus (Paracale, Camarines Norte). Gumaus (Paracale, Camarines Norte) > Economic conditions.