Jensen, Charles A. <br/><br/>
Seasonal nitrification as influenced by crops and tillage. 
By C. A. Jensen... 
 - Washington,  Govt. print. off.,  1910. 
 - 31 p.  incl. diagrs.  23 cm. 
 - U. S. Dept. of agriculture. Bureau of plant industry. Bulletin  173 .
 - United States.  Bureau of Plant Industry.  Bulletin ;  173. .
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<br/><br/><label>LCCN: </label>agr10000690  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nitrification.
<br/><br/><label>LC Class. No.: </label>S651  / .J5