TY - BOOK ED - Food Agriculture Organization of the United Nations ED - International Atomic Energy Agency. Division of Atomic Energy in Food and Agriculture TI - Isotopes in biological dinitrogen fixation: proceedings of an advisory group meeting SN - 9200110789 PY - 1978/// CY - Vienna PB - International Atomic Energy Agency KW - Radioisotopes in biochemistyr KW - Congresses KW - Biological chemistry KW - Technique ER -