Search for: [References = "Święs, F. \(1995\). A Survey of Ruderal Vegetation in Poland\: Phytocenoses wilh Rudbeckia laciniata L., Solidago canadensis L. and S. gigantea Aiton. Annales Universitatis Mariae Curie\-Sklodowska. Sectio C, Biologia 50, 173‑197."]