title: [Grading standard and method for occupational hazards in small industrial enterprises].
authors.forename: Shi-da
authors.initials: SD
authors.lastname: Wu
authors.forename: Mei-Xia
authors.initials: MX
authors.lastname: Liu
authors.forename: Ying
authors.initials: Y
authors.lastname: Tang
mesh_terms: D006801:Humans; D007221:Industry; D016273:Occupational Exposure / Q000145:classification*; D016272:Occupational Health; D012015:Reference Standards