Schubert, K R Enzymes of Purine Biosynthesis and Catabolism in Glycine max: I. COMPARISON OF ACTIVITIES WITH N(2) FIXATION AND COMPOSITION OF XYLEM EXUDATE DURING NODULE DEVELOPMENT. [electronic resource] - Plant physiology Nov 1981 - 1115-22 p. digital Publication Type: Journal Article ISSN: 0032-0889 Standard No.: 10.1104/pp.68.5.1115 doi