title: The Walrus and the Carpenter or the Silica Criteria Standard.
mesh_terms: D000395:Air Pollutants, Occupational; D004781:Environmental Exposure; D004782:Environmental Health; D006077:Government Agencies; D006801:Humans; D009787:Occupational Medicine / Q000592:standards*; D012822:Silicon Dioxide; D012829:Silicosis / Q000517:prevention & control*; D014481:United States
chemical_list: D000395:Air Pollutants, Occupational; D012822:Silicon Dioxide