[1]
Urbisz, A. and Urbisz, A. 2006. Dynamics of occurrence of aquatic plants in the south-western part of the Silesian Upland (south Poland). Biodiversity: Research and Conservation. 3-4 (Dec. 2006), 291–293. DOI:https://doi.org/10.14746/biorc.2006.3-4.20.