00963nam a2200253ua 4500 AR-SsjUCA 20250716140543.0 250228s1977 xxu 000 0 eng d 0-471-99499-5 AR-SsjUCA spa AR-SsjUCA Biological nitrogen fixation in farming systems of the tropics / by A. Ayanaba and P. J. Dart. Chichester, NY : Wiley, 1977. "Based on papers presented at a Symposium held at the International Institute of Tropical Agriculture, Ibadan, Nigeria, in October 1975. Bibliografía al final de capítulos. Agricultura 7562 Conferencias 24139 Fijación del nitrógeno 27683 Zona tropical 27220 Texto 24088 Ayanaba, A. editor 29491 Dart, P. J. editor 29492 International Institute of Tropical Agriculture. 29493 17932 17932 0 0 0 0 CA CA 2014-10-11 0 576.8 AYA Ej.1 CA7207 2025-07-15 00:00:00 2025-07-15 LB 0 0 0 0 CA CA 2014-10-11 0 576.8 AYA Ej.2 CA7637 2025-07-15 00:00:00 2025-07-15 LB