Isotope studies on the nitrogen chain : Proceedings of the symposium - Symposium on the Use of Isotopes in Studies of Nitrogen Metabolism in the Soil-Plant-Animal System, Vienna, 1967.; International Atomic Energy Agency; Food and Agriculture Organization of the United Nations; Joint Commission on Applied Radioactivity (Vienna, International Atomic Energy Agency, 1968)
Includes bibliographical references and index
Keywords: Radioactive tracers in agriculture; Nitrogen -- Metabolism