1Fraser Institute Annual Survey of Mining Companies 2008/2009 [R].2009.02.
2Survey of Mining Companies 2008/2009: Gloomy outlook for global mining industry [DB/OL]. http://technology. infomine.com/articles/1/4052/fraser-institute.exploration. geology/survey.o f.mining.aspx.
3Botswana ranked No. 1 in Africa for mining investment [ DB/ OL]. http://ghanabusinessnews.com/2009/03/18/botswanaranked-no1-in-africa-for-mining-investment.
同被引文献5
1Behrer Dolbear. Where to invest 2014.http://www.dolbear.com / resources/where-to-invest-2014/.
2The Fraser Institute.Annual Survey of Mining Companies: 2015. https://www.fraserinstitute.org/studies/annual-survey-of-mining- companies-2015.
