Poland's mineral resource policy to be developed in the next three years
Poland needs a mineral resource policy – said Prof. Maciej Kaliski of AGH University in Krakow.
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The energy revolution in the Americas and the future of the Persian Gulf countries
... production. Tar sands are a mix of sand, loam, water and bitumen, which must be first separated from the former components and then ...
Artykuł - 10/28/2014 - 16:48