Calvin, M. Isotopic carbon: techniques in its measurement and chemical manipulation (Book) - Tolbert, B. M.; Yankwich, P.E. - New York John Wiley 1949 - 376p. 23 cm. Subjects--Topical Terms: Carbon--Isotopes Tracers (chemistry) Universal Decimal Class. No.: 546.26.02:621.039.85 CAL / 3254