Geotouristic attractions of national parks in southern Poland / SŁOMKA Tadeusz, SŁOMKA Elżbieta // W: Inaugural Global Geotourism conference Australia 2008 : 17–20 August 2008 Fremantle, Western Australia, Australia : conference proceedings / eds. Ross Dowling, David Newsome. — [Australia] : Promaco Conventions PTY Ltd., 2008. — Na okł. dod.: Discover the earth beneath our feet. — ISBN10: 1 86308 146 1. — S. 463