info:oai:orgprints.org:8279info:ofi/fmt:xml:xsd:bookBlumHannaBlum, HannaFaustenGudrunFausten, GudrunNegaEvaNega, EvaJahnMargaJahn, MargaGaerberUteGaerber, UteAedtnerInaAedtner, Ina2006Improvement of seed quality of medicinal plants and herbs in organic farmingproceeding