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Commodities at a Glance - Special issue on Shale Gas
… blocks Figure 2 Scale of rock permeability Source: UNCTAD secretariat, based on Pratson, University of Duke, United … States (accessed on 4 December 2017). Source: UNCTAD secretariat, based on Bauquis, 2014. RESERVOIR ROCK … of world technically recoverable resources) Source: UNCTAD secretariat, based on EIA. (accessed 30 August 2017). World …