Nitrogen :  soils, physiology, biochemistery, microbiology, genetics. 
/ edited by Y.P. Abrol. 
 - New Delhi :  Indian Nationl Science Academy,  1993. 
 - 285 p. ;  25 cm. 
<br/><br/><label>Dewey Class. No.: </label>631.84 NIT  / 2037