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Usoltsev Vladimir А., PIERNIK, Agnieszka, OSMIRKO, Anna A., TSEPORDEY, Ivan S., CHASOVSKIKH, Viktor P. and ZUKOW, Walery. Forest stand biomass of Picea spp.: an additive model that may be related to climate and civilisational changes. Bulletin of Geography. Socio-economic Series. Online. 1 September 2019. Vol. 45, no. 45, pp. 133-147. [Accessed 26 April 2025]. DOI 10.2478/bog-2019-0029.