@ARTICLE{Przylibski_Tadeusz_Andrzej_Changes_2000, author={Przylibski, Tadeusz Andrzej}, volume={vol. 26}, number={No 3}, pages={13-27}, journal={Archives of Environmental Protection}, howpublished={online}, year={2000}, publisher={Polish Academy of Sciences}, type={Article}, title={Changes in the Concentration of Radon-222 and Its Daughter Products in the Air of the Underground Tourist Route in Walim (Lower Silesia)}, URL={http://www.czasopisma.pan.pl/Content/124208/PDF/5_AE_VOL_26_3_2000_Przylibski_Changes.pdf}, keywords={radon, radium, radon daughter products, ionizing radiation, adits, underground touristroute, Lower Silesia, Sudety Mountains, Góry Sowie mountains}, }