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Friedrich Hustedt Diatom Study Centre
Diatom database available at: http://web-apps.awi.de/Hustedt-Diatoms/Curator/ (an older interface is still online under... -
Proasellus distributional data base
Occurrences of about 170 species and subspecies of the genus Proasellus (Isopoda, Asellidae) with spatial coordinates and biological information about the species. More...