61
Advances in agronomy . 163 /
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Advances in agronomy . 166 /
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63
Advances in agronomy . 165 /
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Advances in agronomy . 135 /
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65
Advances in agronomy . 167 /
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66
Advances in agronomy . 174 /
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67
Advances in agronomy . 176 /
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68
Advances in agronomy . 175 /
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69
Advances in agronomy . 180 /
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Advances in agronomy . 179 /
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Advances in agronomy . 177 /
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72
Advances in agronomy . 178 /
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73
International Congress of Pesticide chemistry. 8 : options 2000 : proceedings of a conference organized by the American Chemical Society ... Washington, DC July 4-9, 1994 /
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Ökologie und Landwirtschaft : Situation, Konflikte, Lösungen.
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Knauer, N.
1993
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Pesticide chemistry : advances in international research, development, and legislation : proceeding of the Seventh International Congress of Pesticide Chemistry (IUPAC) Hamburg [5 - 10 August 1990]
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Umweltprobleme der Landwirtschaft: Sachbuch Ökologie.
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Haber, W.
1992