TY - RPRT TI - Pb-concentrations and Pb-isotope ratios in soils collected along an east-west transect across the United States AU - Clemens Reimann AU - David B. Smith AU - Laurel G. Woodruff AU - Belinda Flem PY - 2011 DO - 10.1016/j.apgeochem.2011.04.018 UR - https://pubs.usgs.gov/publication/70005257 ID - 70005257 ER -