Biological nitrogen fixation technology for tropical agriculture :  based on papers presented at a workshop held at the Centro Internacional de Agricultura Tropical, March 9-13, 1981 / 
edited by Peter H. Graham and Susan C. Harris. 
 - Cali, Colombia :  The Centro,  1982. 
 - xv, 726 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil inoculation.<br/>Agriculture--Tropics.<br/>Nitrification.<br/>Nitrogen--Fixation