TY - RPRT TI - Determination of a diagnostic signature for World Trade Center dust using scanning electron microscopy point counting techniques AU - Gregory P. Meeker AU - Amy M. Bern AU - Heather Lowers AU - Isabelle K. Brownfield PY - 2005 DO - 10.3133/ofr20051031 UR - https://pubs.usgs.gov/publication/ofr20051031 ID - ofr20051031 ER -