Knox, Joseph. <br/><br/>
Fixation of atmospheric nitrogen / 

 - 2nd ed. 
 - London :  Gurney and Jackson,  1921. 
 - vii, 124 p. :  ill. ;  19 cm. 
 - Chemical monographs .
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9781017890754 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Atmospheric nitrogen<br/>Legume symbiosis<br/>Agricultural chemistry
<br/><br/><label>Dewey Class. No.: </label>661.65  / KNO