Sulphur deficiency in oilseed rape flowers : symtomatology, biochemistry and ecological impact
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Double low oilseed rape in Germany
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Tractor-soil-implement : Functional interactions and models
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Jahns G, Steinkampf H (1984) Tractor-soil-implement : Functional interactions and models. In: The performance of off-road vehicles and machines : Proceedings [of the] 8th International Conference, August 5-11, 1984, Churchill College, Cambridge University, England ; vol. 3. Cambridge, pp 969-983
