info:oai:orgprints.org:4341info:ofi/fmt:xml:xsd:bookFischerMeikeFischer, MeikeRauppJoachimRaupp, JoachimMäderPaulMäder, PaulDuboisDavidDubois, DavidRömheldVolkerRömheld, Volker2005Micronutrient status in two long-term trials with fertilisation treatments and different cropping systemsproceeding