@misc{Metallmann_Joachim_(1889–1942)_Philosophie_1925, author={Metallmann, Joachim (1889–1942)}, copyright={Public Domain}, address={[Berlin]}, howpublished={online}, year={1925}, publisher={Simion}, language={ger}, title={Philosophie der Naturwissenschaft und Naturphilosophie}, type={Text}, URL={http://rcin.org.pl/Content/23853/PDF/WA004_20817_P10865_Metallman-Philosophi_o.pdf}, keywords={philosophy of nature}, }