Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
A Treatise on Dinitrogen Fixation. Section IV, RWF Hardy, AH Gibson (Eds.), in: Agronomy and Ecology, XII, John Wiley and Sons, New York (1977), p. 527,£ 23,-; US $39, 40.