title: The method used by the U.S. Public Health Service for enumeration of asbestos dust on membrane filters.
mesh_terms: D005374:Filtration; D008722:Methods; D008858:Microscopy, Phase-Contrast; D008903:Minerals / Q000032:analysis*; D014481:United States; D014492:United States Public Health Service
chemical_list: D008903:Minerals