1
Expertentagung der gemeinsamen Arbeitsgruppe Bodenschutz der beiden Arbeitsgemeinschaften Alp und Alpen Adria: Kurzfassungen der Referate : Ljubljana, 18.10.90-19.10.90.
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2
Pesticides in soils and water: current perspectives : Pesticides in soils and water: current perspectives: symposium: proceedings : Coventry, 25.03.91-27.03.91.
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3
Interactions at the soil colloid - soil solution interface : NATO advanced study institute on interactions at the soil colloid - soil solution interface : Gent, 25.08.86-29.08.86.
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4
Physico chemical aspects of soil and related materials.
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...GNA - Geology - soil sciences...
5
International Soil Water Symposium. [1] : proceedings.
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...GNA - Geology - soil sciences...
6
International Soil Water Symposium. [2] : proceedings.
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...GNA - Geology - soil sciences...
7
Soil micromorphology : International working meeting on soil micromorphology 0002: proceedings : Arnhem, 22.09.64-25.09.64.
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...GNA - Geology - soil sciences...
8
Transactions of 7th International Congress of Soil Science. 1. Official communications scientific papers commissions I soil physics and VI soil technology : Madison, Wisc. USA, 1960.
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9
Transactions of 7th International Congress of Soil Science. 2. Commissions II soil chemistry and III soil biology : Madison, Wisc. USA, 1960.
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1961
...GNA - Geology - soil sciences...
10
Transactions of 7th International Congress of Soil Science. 3. Commission IV fertility and plant nutrition : Madison, Wisc. USA, 1960.
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1961
...GNA - Geology - soil sciences...
11
Transactions of 7th International Congress of Soil Science. 4. Commissions V Genesis, Classification, Cartography and VII Mineralogy : Madison, Wisc., USA, 1960.
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12
Sitzung / Rheinisch-Westfälische Akademie der Wissenschaften. 231/238 : Düsseldorf, 7.10.70 ; 4.10.72 ; 7.2.73 ; 4.4.73 ; 6.6.73 ; 10.1.73 ; 4.7.73 ; 24.1.73
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