Joaquin Enrique Zanetti
J. W. Mellor
Yash P. Abrol
J. R. Partington
Charles B. Colburn
International Symposium/Workshop on Biological Nitrogen Fixation Associated with Rice (1994 Dhaka, Bangladesh)
National Institute for Biotechnology and Genetic Engineering (Pakistan)
International Symposium on Nitrogen Fixation (4th 1980 Canberra, A.C.T.)
Phytochemical Society of Europe. Symposium
P. de Willigen
Unknown Author
Franz August Schmitt
E. N. Avvakumova
David W. Emerich
International Congress on Nitrogen Fixation (10th 1995 Saint Petersburg, Russia)
F.P.W Winteringham
John D Alexander
International Congress on Nitrogen Fixation (11th 1997 Institut Pasteur, Paris, France)
North American Conference on Symbiotic Nitrogen Fixation (15th 1995 Raleigh, N.C.)
Achim Müller