Kononova, M. M. <br/><br/>
Soil organic matter,  its nature, its role in soil formation and in soil fertility. 
Translated from the Russian by T.Z. Nowakowski and G.A. Greenwood. 
 - Oxford :  Pergamon Press,  1961. 
 - 450 p. :  ill. ;  24 cm. 
<br/><br/> Translation of: Problema pochvennogo gumusa i sovremennye zadachi ego izucheni�i�a (romanized form). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Humus.