[ 发表于: Pollution ]
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结果 1-2 的 2
(Co-operation of agriculture und water management in the catchment areas of Stever and Frischhofsbach)
1993
Brautlecht, F.-J. (Staatliches Amt fuer Wasser und Abfallwirtschaft, Muenster (Germany))
ZB MED Nutrition. Environment. Agriculture - Germany
(The economic situation of agriculture on the treshold of the EC reform and stricter regulations for the protection of the environment)
1993
Zeddies, J. (Hohenheim Univ., Stuttgart (Germany). Inst. fuer Landwirtschaftliche Betriebslehre)
ZB MED Nutrition. Environment. Agriculture - Germany
