.International Symposium on Nitrogen Fixation (4th : 1980 : Canberra):current perspectives in nitrogen fixation ; proceedings of the 4th International Symposium, Canberra, Dec. 1-5, 1980.Elsevier/North-Holland,1981.
International Symposium on Nitrogen Fixation (4th : 1980 : Canberra):current perspectives in nitrogen fixation ; proceedings of the 4th International Symposium, Canberra, Dec. 1-5, 1980