Advances in soil organic matter research: the impact on agriculture and the environment / 

 - Cambridge :  Royal Society of Chemistry,  1991. 
 - ix, 400 p. :  ill. 
<br/><br/> "The proceedings of a symposium organised by the Agricultural and Environment Groups of the Royal Society of Chemistry. The British Society of Soil Science, and the International Humic Substances Society. University of Essex, 3rd-4th September 1990."--Verso of Tp 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soils.<br/>Humus.<br/>Soil fertility.