Erika Micheli, Szent Istvan Univ, Pater K.U. 1, Godollo, 2100, Hungary
The first official version of the World Reference Base for Soil Resources was released at the 16th World Congress of Soil Science at Montpellier in 1998. At the same event it was also endorsed and adopted as the system for soil correlation and international communication of the International Union of Soil Sciences (IUSS). After eight years of intensive worldwide testing and data collection, the present-day state of the art, "World Reference Base for Soil Resources 2006" (WRB) has been published. This paper will present the major changes in principles and structure in the system.
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