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

書目詳細資料
主要作者:	Bayle, Romeo L.
格式:	Thesis
語言:	English
出版:	1999.
主題:	Gold mine and mining > Philippines > Gumaus (Paracale, Camarines Norte). Gumaus (Paracale, Camarines Norte) > Economic conditions.