Norton, Thomas H. <br/><br/>
Utilization of atmospheric nitrogen 

 - Washington :  Government Printing Office,  1912. 
 - 178 p. :  ill. ;  23 cm. 
 - Special Agents Series  v 52 .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nitrogen Fixation<br/>Agricultural Chemistry<br/>Soil Fertility
<br/><br/><label>Dewey Class. No.: </label>665.824  / NOR