Citation source document
Gospodarka Surowcami Mineralnymi – Mineral Resources Management. 2017, vol. 33, issue 3, p. 121-142.
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http://creativecommons.org/licenses/by-nc-nd/4.0/
Rights
© Mineral and Energy Economy Research Institute, Polish Academy of Sciences. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.