Soil organic matter studies :  proceedings of a symposium on 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 Agrochimica, and held in Braunschweig, 6-10 September 1976. 
 - Vienna :  International Atomic Energy Agency ,  1977 
 - 2 v. :  ill., chart ;  24 cm. 
 - Proceedings series .
<br/><br/> "STI/PUB/438."  Library has vol.1,2 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9200100775 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Humus--Congresses.<br/>Soil productivity--Congresses.<br/>Soils--Nitrogen content--Congresses.
<br/><br/><label>Dewey Class. No.: </label>631.417