Reasons of problems of the polish hard coal mining in connection with restructuring changes in the period 1988–2014
| Autor: | Korski, Jacek, Tobór–Osadnik, Katarzyna, Wyganowska, Małgorzata |
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| Zdroj: | In Resources Policy June 2016 48:25-31 |
| Databáze: | ScienceDirect |
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Full Text from ScienceDirect