Links

 Multiple contributors, Administrator: A. Kraberg (November 2003): PLANKTON*NET Alfred-Wegener Institute for Polar and Marine Research
http://planktonnet.awi.de

 Jindrová R.: Rendy - Fotogalerie a systematika živočichů, rostlin a hub
http://www.rendy.eu

 Skautský oddíl Hununpa - Praha
http://www.hununpa.cz

 Bisby F., Roskov Y., Ruggiero M., Orrell T., Paglinawan L., Brewer P., Bailly N., Hertum J., eds: Species 2000 & ITIS Catalogue of Life: Annual Checklist
http://www.catalogueoflife.org

 Brands S. J. (comp.) (1989-2005): Systema Naturae 2000 Amsterdam, The Netherlands.
http://sn2000.taxonomy.nl

 Brands S. J. (ed.): The Taxonomicon
http://sn2000.taxonomy.nl/Taxonomicon

 Norton C., Patterson D.: uBio - Universal Biological Indexer and Organiser
http://www.ubio.org

 Wikipedia
http://wikipedia.org

 Working Group for Ecoinformatics
http://www.bio.unc.edu/faculty/peet/vegdata

 World Species List - Animals, Plants, Microbes
http://species.enviroweb.org