TY  - BOOK
AU  - Mulongoy,K.
AU  - Gueye,M.
AU  - Spencer,D.S.C.
TI  - Biological nitrogen fixation and sustainability of tropical agriculture: proceedings of the Fourth International Conference of the African Association for Biological Nitrogen Fixation (AABNF), held at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria, 24-28 September 1990 
SN  - 0471935603
PY  - 1992///
CY  - Chichester, West Sussex, U.K., New York
PB  - J. Wiley
KW  - Nitrogen in agriculture
KW  - Tropics
KW  - Africa
KW  - Nitrogen-fixing plants
KW  - Cropping systems
KW  - Sustainable agriculture
KW  - Nitrogen
KW  - Fixation
ER  -