The biochemistry of symbiotic nitrogen fixation [by] Perry W. Wilson. Wilson, Perry W. (Perry William), 1902-1981. Nitrogen Fixation. Symbiosis. S651 .W65 574.192 WIN The first two plates are on double leaves, each with four facsimiles. "References": p. [259]-292. Madison, The University of Wisconsin press, 1940. 1940. 1940 Text xiv, 302 p. : eng