title: [Progress of the industry and occupational health: City gasworks].
mesh_terms: D004782:Environmental Health; D004787:Environmental Pollution / Q000517:prevention & control; D005579:Fossil Fuels; D005740:Gases; D007564:Japan; D009787:Occupational Medicine / Q000639:trends*
chemical_list: D005579:Fossil Fuels; D005740:Gases