Plant and soil:  biological nitrogen fixation in natural and agricultural habitats 
ed. T. A. Lie 
<br/><br/> FACULTAD DE ZOOTECNIA 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plantas--nitrógeno<br/>Edafología
<br/><br/><label>Dewey Class. No.: </label>631.47  / PLA 1971