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Are you Gerd Hintermaier-Erhard, author of the books below?
Wörterbuch der Bodenkunde by Gerd Hintermaier-Erhard Böden der Welt by Wolfgang Zech Böden der Welt by Wolfgang Zech Grundzüge der Geochemie by Brian Mason Soils of the World by Wolfgang Zech Techniques In Sedimentology by Maurice E. Tucker Earth by Martin Redfern Böden der Welt by Wolfgang Zech


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