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Specification of representative farm models in supply analysis : a case study
Hanf, C.-H., (1979)
Specification of trade in intermediate by-products in aggregate models of supply : a case study
Hanf, C.-H., (1980)
Planning and decision in agribusiness : principles and experiences ; a case study approach to the use of models in decision planning
Hanf, Claus-Hennig, (1983)