Humble Oil Company Radiocarbon Dates II Brannon, H. R., Jr. ; Simons, L. H. ; Perry, D. ; Daughtry, A. C. ; McFarlan, E., Jr. Abstract Publication: Science Pub Date: May 1957 DOI: 10.1126/science.125.3254.919 Bibcode: 1957Sci...125..919B