The price of precious.

ग्रंथसूची विवरण
में प्रकाशित:	National geographic. 224, 4 (Oct. 2013).
मुख्य लेखक:	Gettleman, Jeffrey
स्वरूप:	लेख
भाषा:	English
विषय:	Congo (Democratic Republic > Economic conditions. Mines & mineral resources > Congo (Democratic Republic) Mineral mining.