Problems in sampling of trace elements in rocks, soils, waters and plants. Sampling problems in trace element investigations of rocks.
D000828:Animal Population Groups / Q000378:metabolism; D000818:Animals; D004782:Environmental Health; D004813:Epidemiology; D055593:Geological Phenomena; D005844:Geology; D006801:Humans; D008377:Maps as Topic; D010944:Plants / Q000032:analysis / Q000378:metabolism; D012494:Sampling Studies; D012987:Soil / Q000032:analysis*; D014131:Trace Elements / Q000032:analysis* / Q000378:metabolism / Q000600:supply & distribution; D014481:United States; D014867:Water / Q000032:analysis
D012987:Soil; D014131:Trace Elements; D014867:Water