info:oai:orgprints.org:4304info:ofi/fmt:xml:xsd:bookBlekenMarina A.Bleken, Marina A.SteinshamnHåvardSteinshamn, HåvardThuenErlingThuen, ErlingKoeslingMatthiasKoesling, Matthias2005CLOSING THE PLANT-ANIMAL LOOP: A PREREQUISITE FOR ORGANIC FARMING proceeding