Nienartowicz, A., Kamiński, D., Kunz, M., Deptuła, M. and Adamska, E. 2015. Changes in the plant cover of the dune hill in Folusz near Szubin (NW Poland) between 1959 and 2012: the problem of preservation of xerothermic grasslands in the agricultural landscape. Ecological Questions. 20, (Mar. 2015), 23–38. DOI:https://doi.org/10.12775/EQ.2014.013.