COMMUNICATIONS
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Organic livestock production in northern italy: an overview of some economic research projects - F. ANSALONI
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DOC Long-term field experiment: soil fertility in organic farming systems - A. FLIESSBACH, P. MÄDER and D. DUBOIS
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Outlying field project and soil fauna project planned at the norwegian centre for ecological agriculture - S. HANSEN
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Thoughts on research approaches within organic farming - S. HANSEN and T. RUISSEN
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An approach to the study of mastitis control in organic dairy herds in the UK - M. HOVI and S. RODERICK
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Designing and disseminating ecological production systems for perennials a first step for developing sustainable organic farming systems for the mediterranean - E. KABOURAKIS and A. VASSILIOU
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Evaluating organic farming in hill and upland areas of the u.k. - R. KEATINGE
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Prototyping ecological arable farming systems: designing, testing and improving with pilot farms - H. KLOEN and P. VEREIJKEN
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Activities of the mediterranean agronomic institute of Bari for the development of organic farming in the mediterranean region - C. LACIRIGNOLA
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DOC Long-term field experiment: yield and efficiency of organic farming systems - P. MÄDER, P. FRIED, A. FLIESSBACH, D. DUBOIS and U. NIGGLI
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Quality markers of organic agriculture products - G. QUAGLIA, G. BONAFACCIA, E. FINOTTI AND F.M.BUCARELLI
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Animal health and welfare in organic livestock systems: identification of constraints and priorities - S. RODERICK, M. HOVI and N. SHORT
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A strategy to reduce the impact of late blight in norwegian organic potato production - T. RUISSEN
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Looking for new forms of organic vegetable farming - an application of activity theory and developmental work research - L. SEPPÄNEN
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Agro-designing: sustainability-driven, vision-oriented, problem preventing and knowledge-based methodology for improving farming systems sustainability - D. ZNAOR and E.A. GOEWIE