The price of precious.

Xehetasun bibliografikoak
Argitaratua izan da:	National geographic. 224, 4 (Oct. 2013).
Egile nagusia:	Gettleman, Jeffrey
Formatua:	Artikulua
Hizkuntza:	English
Gaiak:	Congo (Democratic Republic > Economic conditions. Mines & mineral resources > Congo (Democratic Republic) Mineral mining.