Soil organic matter studies proceedings of a symposium on soil organic matter... 

 - Vienna :  OIEA,  1977 
 - 2 v.  ; gráfs. 
 - Proceedings series .
 - Proceedings series .
<br/><br/><label>LCCN: </label>35793 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Abonos.<br/>Humus.<br/>Suelos y cultivos.<br/>Suelos--Materia orgánica.
<br/><br/><label>Dewey Class. No.: </label>631.43  / O6