@ARTICLE{Łepko_Zbigniew_Views_2017, author={Łepko, Zbigniew}, number={No 24}, journal={Papers on Global Change IGBP}, howpublished={online}, year={2017}, publisher={Polish Academy of Sciences}, title={Views of Biotic Nature and the Idea of Sustainable Development}, URL={http://www.journals.pan.pl/Content/102596/PDF/5%20%C5%81epko.pdf}, doi={10.1515/igbp-2017-0003}, }