000			00499 a2200169 4500
080			_a631.4(063) _bI 61 P
245	1		_aProceedings
260			_aNew Delhi _bIndian Society of Soil Science _c1981
650			_aSoil Science
650			_aNitrogen Fixation
650			_aOrganic Matter
440			_aTransactions of the 12th International Congress of
500			_aVol. 2 : Non-symbiotic nitrogen fixation and organic matter in the tropics
100			_a _d
300			_a266 p.
901			_a159043
999			_c80340 _d80340