Humic substances :  nature's most versatile materials / 
edited by Elham A. Ghabbour, Geoffrey Davies 
 - New York :  Taylor and Francis,  2004 
 - xxii, 372 p. :  ill. ;  24 cm. 
<br/><br/> 'Selected papers presented in 2002 at IHSS 11 and Humic Substances Seminar VI at Northeastern University'--P. 4 of cover 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0591690153  RM561.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Humus--Congresses<br/>Soils--Humic acid content--Congresses