00893nam a2200301 u 450000100070000000500170000700800410002403500110006503500210007604000130009704100080011008000070011810000370012524500770016226000410023930000180028065000190029865000310031765000250034865000200037365000250039365000270041870000370044570000390048270000410052194200120056299900170057414360420231125090712.0971106s1949 eng a143604 a(OCoLC)777989727 ccomduadb aeng aQD10aCalvin, Melvin4auteaut924351510aIsotopic carbon : technique in its measurement and chemical manipulation aEstados Unidos :bJohn Wiley,c1949. a376 páginas aCarbono932492 aTrazadores quimicos937547 aRadioisotopos919071 aCarbón932631 aDestilación936954 7aRadiación2lemb985410aReid, James C.4auteaut927608710aTolbert, Bert M.4auteaut931498210aYankwich, Peter E.4auteaut9482334 cBOOKn0 c78769d78769