info:oai:orgprints.org:7474info:ofi/fmt:xml:xsd:bookHauggaard-NielsenHenrikHauggaard-Nielsen, HenrikTranberg NikolajsenJacobTranberg Nikolajsen, JacobSteen JensenErikSteen Jensen, Erik2006Competitive ability of grain legume-barley intercrops towards volunteer crops and weedsproceeding