TY - BOOK ED - Symposium on the isolates and radiation in research on soil -plant relationships: TI - Proceedings of the symposium on the use of isolates and radiation in research on soil-plant relationships including forestry held at Vienna on 13-17 December 1971 U1 - 631.881 21st ed PY - 1972/// CY - Vienna PB - International Atomic Energy Agency KW - Forestry: tree physiology KW - soil chemistry and analytical KW - Ecology and mineral cycling KW - Soil fertility N1 - International Atomic energy agency, Food and agricultural organisation of the united nations ER -