Soil-plant-nitrogen relationships/ 
edited by Donald R. Nielsen, J. G. MacDonald 
 - New York:  Academic Press,  1978 
 - xiii, 528 pages  ill.;  24 cm. 
 - Nitrogen in the environment  v.2 .
<br/><br/> Proceedings of a conference held in Feb. 1977, sponsored by the M. Theodore Kearney Foundation of Soil Science, University of California, Davis 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0125184026  v.2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plants, Effect of nitrogen on--Congresses.<br/>Soils--Nitrogen content--Congresses.<br/>Plant--soil relationships--Congresses.<br/>Nitrification--Congresses.<br/>Nitrogen--Fixation--Congresses.