TY - BOOK AU - International Atomic Energy Agency TI - Isotopes and radiation in soil organic-matter studies : proceeding 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, July 15-19, 1968 PY - 1968/// CY - Vienna PB - International Atomic Energy Agency ER -