info:oai:orgprints.org:7507info:ofi/fmt:xml:xsd:bookNiebergHiltrudNieberg, Dr. HiltrudOffermannFrankOffermann, Dr. FrankThobePetraThobe, PetraZanderKatrinZander, Dr. Katrin2006Profitability and policy dependency of organic farms in selected European countriesproceeding