Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education site on February 19, 2002.
Laboratory report documenting transmission electron microscopy analysis of air samples collected from NYC Board of Education facilities in February 2002.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education site on February 19, 2002.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education site on February 19, 2002.