International symposium on the use of isotopes and radiation in research on soil-plant relationships (1978: Colombo). 

 - Vienna :  International Atomic Energy Agency,  1979. 
 - 660 pages :  illustrations ;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Isotopes -- Congresses.<br/>Plant-soil relationships.<br/>Radiation.