STEINERT, M [Free purines and mononucleotides in the frog embryo]. [electronic resource] - Experientia Sep 1951 - 342-3 p. digital Publication Type: Journal Article ISSN: 0014-4754 Standard No.: 10.1007/BF02166399 doi Subjects--Topical Terms: AnimalsAnuraNucleic Acids--metabolismPurines