The anthropogenic pollutants in urban ponds based on the example of SłupskJózef Piotr Antonowicz, Damian Panasiuk, Sylwia Machula, Jacek Florian Kubiak and Magdalena OpalińskaE3S Web Conf., 45 (2018) 00004DOI: https://doi.org/10.1051/e3sconf/20184500004