TY - RPRT TI - Concentration and spatial distribution of selected constituents in Detroit River bed sediment adjacent to Grassy Island, Michigan, August 2006 AU - C. J. Hoard PY - 2008 DO - 10.3133/ofr20081016 UR - https://pubs.usgs.gov/publication/ofr20081016 ID - ofr20081016 ER -