info:oai:orgprints.org:9775info:ofi/fmt:xml:xsd:bookVianJean FrançoisVian, Jean FrançoisPeignéJoséphinePeigné, JoséphineChaussodRémiChaussod, RémiRoger-EstradeJeanRoger-Estrade, Jean2007Assessment of tillage systems in organic farming: influence of soil structure on microbial biomass. First resultsproceeding