Blakley, Raymond L., 1926- The biochemistry of folic acid and related pteridines / by R. L. Blakley - Amsterdam : North-Holland, 1969 - xxi, 570 p. ; 26 cm. - Frontiers of biology (Amsterdam), v.13 . LCCN: 69-018383 Subjects--Topical Terms: PteridinesFolic acid