info:oai:orgprints.org:10379info:ofi/fmt:xml:xsd:bookOehenBernadetteOehen, BernadetteCosta-FontMontserratCosta-Font, MontserratMorgnerMarionMorgner, MarionGilJosé M.Gil, José M.StolzeMatthiasStolze, MatthiasJanuary 2007Co-existence in maize supply chains in Spain and Switzerlandproceeding