Martin Crawford
Tang, Ya.
P. Somasegaran
International Congress on Nitrogen Fixation (8th 1990 Knoxville, Tenn.)
D. Beck
International Symposium on Nitrogen Fixation with Non-Legumes (3rd 1984 Helsinki, Finland)
National Institute for Biotechnology and Genetic Engineering (Pakistan)
International Symposium/Workshop on Biological Nitrogen Fixation Associated with Rice (1994 Dhaka, Bangladesh)
G. S. Khush
International Symposium on 'Nitrogen Fixation with Non-legumes' (4th 1987 Rio de Janeiro, Brazil)
H. Lambers
G. Hardarson
International Workshop on Associative Interactions of Nitrogen-Fixing Bacteria with Plants (1995 Saratov, Russia)
W. D. P. Stewart
Unknown Author
K. E. Giller
Dale O. Evans
Food and Agriculture Organization of the United Nations
National Symposium on Biological Nitrogen Fixation (2nd 1982 Helsinki, Finland)
T. I. Novikova