Isotopic carbon, techniques in its measurement and chemical manipulation, by Melvin Calvin [and others] Calvin, Melvin, 1911-1997. Carbon Isotopes. Tracers (Chemistry) Tracers (Biology) QD466.5.C1 C3 541.012 CAI Bibliography: p. 341-350. Bibliographical footnotes. New York, J. Wiley, 1949. 1949. 1949 Text xiii, 376 p. eng