Sigam&Garcia2012
Sigam, C. & Garcia, L. 2012. Extractive industries: Optimizing value retention in host countries. United Nations, New York & Geneva. https://unctad.org/system/files/official-document/suc2012d1_en.pdf
Sigam, C. & Garcia, L. 2012. Extractive industries: Optimizing value retention in host countries. United Nations, New York & Geneva. https://unctad.org/system/files/official-document/suc2012d1_en.pdf