title: Radioactivity of whale vertebra fossils in the Chesapeake Bay area.
mesh_terms: D000818:Animals; D002591:Cetacea; D005580:Fossils; D049690:History, Ancient; D007554:Isotopes / Q000032:analysis; D007854:Lead / Q000032:analysis; D008396:Maryland; D010163:Paleontology; D011868:Radioisotopes / Q000032:analysis*; D013910:Thorium / Q000032:analysis; D014501:Uranium / Q000032:analysis; D014768:Virginia; D014907:Whales
chemical_list: D007554:Isotopes; D011868:Radioisotopes; D007854:Lead; D014501:Uranium; D013910:Thorium