000			00480nam a2200157Ia 4500
008			140208s9999 xx 000 0 und d
020			_a9780471994992
044			_aUnited Kingdom
080			_a631.847 AY15B
100			_aAyanaba, A., ed.
245			_aBiological nitrogen fixation in farming systems of the tropics _cedited by A. Ayanaba and P.J. Dart
260			_bJohn Wiley _aChichester _c1977
300			_axi, 377 p.; 24cm.
700			_aDart, P.J., ed.
942			_2udc _cGB
999			_c7852 _d7852