TY - BOOK AU - ill. TI - Soil organic matter studies: proceedings of a symposium jointly organized by the International Atomic Energy Agency and the Food and Agriculture Organization of the United Nations in Co-operation with Agrochemical, and held in Braunschweig, 6th -10th September 1976. Vol.2 AV - UNO S592.5.S95 Vol.2 CY - Vienna KW - Humus ER -