000			00374nam a2200145Ia 4500
008			180613s9999||||xx |||||||||||||| ||und||
020			_a471994995
041			_aen
082			_a631.84
100			_aAYANABA, A.
245		0	_aBiological Nitrogen Fixation in farming systerm of th
260			_aNew York. _bJohn Wiley & Sons, US _c1977
300			_axi, 377p.
942			_cSR
999			_c75334 _d75334