Isotopes and radiation in soil organic-matter studies. / 
Proceedings of the Symposium ... 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. 
 - Vienna :  International Atomic Energy Agency,  1968. 
 - 584 p. ;  24 cm. 
 - Proceedings series. .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radioisotopes in soil chemistry--Congresses.