G. P. Robertson
Luiz A. Martinelli
Brent L. Black
Douglas G. Capone
Arvin Mosier
T. Rosswall
Meytal Budin Higgins
Nitrogen Cycle Study Group
Mark Aaron Altabet
E. N. Mishustin
Robert Johnston Olson
Bernal, María Pilar Dr.
Food and Agriculture Organization of the
International Nitrogen Conference (2nd 2001 Potomac, Md.)
International Nitrogen Conference (5th 2010 New Delhi, India)
Unknown Author
British Ecological Society. Symposium (22nd : 1981 : Oxford, Oxfordshire)
Carl Olof Tamm
Fabio O. Pedrosa
V. N. Kudei͡arov