Bjarnason, Sigfús <br/><br/>
Turnover of organic nitrogen in agricultural soils and the effects of management practices on soil fertility 

 - Uppsala  Univ.  1988 
<br/><br/><label>Subjects--Index Terms: </label>NITROGEN RESEARCH SOIL FERTILITY SOIL MANAGEMENT SOIL SCIENCES SOIL TYPES 
<br/><br/><label>Dewey Class. No.: </label>631