info:oai:icrisat:4451info:ofi/fmt:xml:xsd:journalYoneyamaTYoneyama, TNambiarP T CNambiar, P T CLeeK KLee, K KSrinivasa RaoBSrinivasa Rao, BWilliamsJ HWilliams, J HNitrogen accumulation in three legumes and two cereals with emphasis on estimation of N2 fixation in the legumes by the natural15 N-abundance techniqueBiology and Fertility of Soils0178-27621990925-301article