01003nam0-22003011i-450-99000398510040332120031209130142.0000398510FED01000398510(Aleph)000398510FED0100039851020031209d1968----km-y0itay50------baengATy---j---001y-Isotope studies on the nitrogen chainproceeding of the symposium on the use of isotopes in studies of nitrogen metabolism in the soil plant animal systemInternational atomic energy agencyViennaInternational atomic ecergy agency1968342 p.24 cmAlimentiContaminazione664.07International Atomic Energy Agency12873ITUNINARICAUNIMARCBK99000398510040332160 664.802 88 B 239057FAGBCFAGBCIsotope studies on the nitrogen chain474169UNINA