Technical handbook on symbiotic nitrogen fixation :  legume/rhizobium. 

 - [2nd ed.]. 
 - Rome :  FAO of the United Nations,  1993. 
 - 1 v. :  ill. 
<br/><br/><label>ISBN: </label>9251031991 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rhizobium.<br/>Symbiosis.<br/>Legumes.<br/>Nitrogen--Fixation--Handbooks, manuals, etc.