title: Within-laboratory quality control of asbestos counting.
mesh_terms: D000395:Air Pollutants, Occupational / Q000032:analysis*; D001194:Asbestos / Q000032:analysis*; D007753:Laboratories / Q000592:standards*; D011786:Quality Control
chemical_list: D000395:Air Pollutants, Occupational; D001194:Asbestos