Hejný, S., Slavík, B. (ed.): Květena České Republiky [Flora of the Czech Republic]. Vol. 3
According to PR-model, Hejný, S., Slavík, B. (ed.): Květena České Republiky [Flora of the Czech Republic]. Vol. 3 is ranked 367,515th in multilingual Wikipedia, in particular this website is ranked 1,216th in Czech Wikipedia.