1
Bodenökologie. 3. Pflanzenschutzmittel, Agrarhilfsstoffe und organische Umweltchemikalien : Mikrobiologie der Bodenzymatik : mit 5 Abb. und 15 Tabellen /
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2
Denitrification in soil and sediment : Symposium on denitrification in soil and sediment: proceedings : Aarhus, 06.06.89-09.06.89.
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3
Methods in soil biology.
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4
Nitrogen metabolism of plants : Nitrogen metabolism of plants: conference: papers : 1991.
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5
Progress in nitrogen cycling studies : proceedings of the 8th Nitrogen Workshop held at the University of Ghent 5-8 Sept /
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