vitezslav.plasek@osu.cz
r.ochyra@botany.pl
msmoczyk@wp.pl
wiaderny@onet.eu
jackoopman@e-cho.pl
© 2013 Vítězslav Plášek, Ryszard Ochyra, Michał Smoczyk, Albert Wiaderny, Jacob Koopman, published by Silesian Museum in OpavaThis work is licensed under the Creative Commons License.