1. Vahnina M.N. The ecology of Russian cities in the north. Vorkuta industrial region // Записки Горного института. 2002. Том 150№ 1. C. 155-158.
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1. Vahnina M.N. The ecology of Russian cities in the north. VORKUTA industrial region // Journal of Mining Institute. 2002. Том 150№ 1. C. 155-158.
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