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1.- Geochemical landscapes of Alaska: New map presentations and interpratations for 23 elements in surficial materials
Gough, L.P.,ed; Wang, B., ed.; Smith, David B., ed.; Gustavsson, N., ed
Reston: U.S. Geological Survey, 2005
U.S. Geological Survey Professional Paper
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2.- Geochemical studies of North American soils: results from the pilot study phase of the North American Soil Geochemical Landscapes Project
Smith, David B., ed.
Amsterdam: Elsevier, 2009
Applied Geochemistry
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