title: 241Am and plutonium in Japanese rice-field surface soils.
mesh_terms: D000576:Americium / Q000032:analysis*; D007564:Japan; D012275:Oryza; D011005:Plutonium / Q000032:analysis*; D011847:Radioactive Fallout / Q000032:analysis*; D012989:Soil Pollutants / Q000032:analysis*; D012990:Soil Pollutants, Radioactive / Q000032:analysis*; D013997:Time Factors
chemical_list: D011847:Radioactive Fallout; D012989:Soil Pollutants; D012990:Soil Pollutants, Radioactive; D011005:Plutonium; D000576:Americium