TY  - BOOK
AU  - Ayanaba, A.
AU  - Dart, P. J.
ED  - International Institute of Tropical Agriculture.
TI  - Biological nitrogen fixation in farming systems of the Tropics
SN  - 0471994995
U1  - 631.84 
PY  - 1977///
CY  - New York
PB  - Wiley
KW  - Nitrogen
KW  - Fixation
KW  - Congresses
KW  - Agriculture
KW  - Tropics
KW  - Cropping systems
N1  - "Based on papers presented at a symposium held at the International Institute of Tropical Agriculture, Ibadan, Nigeria, in October 1975."; "A Wiley-Interscience publication."; Includes bibliographical references and index
ER  -