Biological nitrogen fixation in farming systems of the tropics / 
by A. Ayanaba and P. J. Dart. 
 - Chichester, NY :  Wiley,  1977. 
<br/><br/> "Based on papers presented at a Symposium held at the International Institute of Tropical Agriculture, Ibadan, Nigeria, in October 1975. 
<br/><br/>Bibliografía al final de capítulos. 
<br/><br/><label>ISBN: </label>0-471-99499-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultura<br/>Conferencias<br/>Fijación del nitrógeno<br/>Zona tropical
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Texto