WITULSKA, Mariola; GÓRNA, Aleksandra; ADAMOWICZ, Krzysztof. Forecasting costs of economic tasks in the Regional Directorate of State Forests in Piła. Economics and Environment, Poland, v. 97, n. 2, p. 1161, 2026. DOI: 10.34659/eis.2026.97.2.1161. Disponível em: https://ekonomiaisrodowisko.pl/journal/article/view/1161. Acesso em: 15 jul. 2026.