Iongh, H.H. de, Bánki, O.S., Bergmans, W. and Werff ten Bosch, M.J. van der (editors). 2003. The harmonization of Red Lists for threatened species in Europe. Proceedings of an international seminar in Leiden, 27 and 28 November 2002. Mededelingen No. 38. Netherlands Commission for International Nature Protection, Leiden.
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