@misc{Roo-Zielińska_Ewa_(1948–_)_Ecosystem_2012, author={Roo-Zielińska, Ewa (1948– ) and Grabińska, Bożenna (1952– )}, volume={85}, number={2}, copyright={Rights Reserved - Free Access}, address={Warszawa}, journal={Geographia Polonica}, howpublished={online}, year={2012}, publisher={IGiPZ PAN}, language={eng}, type={Text}, title={Ecosystem services – classification and different approaches at various levels of biosphere organisation – a literature review)}, URL={http://www.rcin.org.pl/Content/28378/PDF/WA51_46750_r2012-t85-no2_G-Polonica-Roo-Zieli.pdf}, keywords={ecosystem services, ecological and spatial scale, management, land use, biodiversity}, }