Mcfarlane, J. C. Tritium accumulation in lettuce fumigated with lemental tritium / by J. C. Mcfarlane - Washington,D.C. : United States Government Printing Office, 1976 - 18 p. ; 28 cm. - Ecological Research Sereis ; EPA-600/3-76-006 . Subjects--Topical Terms: TritiumHydrogen--Chemistry Dewey Class. No.: 546.213