Isotopes and radiation in soil organic-matter studies : proceedings of the Symposium on the Use of Isotopes and Radiation in Soil Organic-matter Studies jointly organized by the International Atomic Energy Agency and the Food and Agriculture Organization of the United Nations in co-operation with the International Soil Science Society and held in Vienna, 15-19 July 1968. (Proceedings series)
Isotopes and radiation in soil organic-matter studies : proceedings of the Symposium on the Use of Isotopes and Radiation in Soil Organic-matter Studies jointly organized by the International Atomic Energy Agency and the Food and Agriculture Organization of the United Nations in co-operation with the International Soil Science Society and held in Vienna, 15-19 July 1968.