01167nam a2200265ua 4500003001000000005001700010008004100027020001800068040003000086245010000116260003600216500014100252504004400393650002200437650002400459650003800483650002500521655001700546700003100563700003100594710006100625999001700686952009900703952009900802AR-SsjUCA20250716140543.0250228s1977    xxu           000 0 eng d  a0-471-99499-5  aAR-SsjUCAbspacAR-SsjUCA00aBiological nitrogen fixation in farming systems of the tropics /cby A. Ayanaba and P. J. Dart.  aChichester, NY :bWiley,c1977.  a"Based on papers presented at a Symposium held at the International Institute of Tropical Agriculture, Ibadan, Nigeria, in October 1975.  aBibliografía al final de capítulos. 4aAgricultura97562 4aConferencias924139 4aFijación del nitrógeno927683 4aZona tropical927220 4aTexto9240881 aAyanaba, A.eeditor9294911 aDart, P. J.eeditor9294922 aInternational Institute of Tropical Agriculture. 929493  c17932d17932  00104070aCAbCAd2014-10-11l0o576.8 AYA Ej.1pCA7207r2025-07-15 00:00:00w2025-07-15yLB  00104070aCAbCAd2014-10-11l0o576.8 AYA Ej.2pCA7637r2025-07-15 00:00:00w2025-07-15yLB