[Improving working conditions in the production of extraction phosphoric acid from low-grade phosphorites].
D006801:Humans; D008452:Maximum Allowable Concentration; D009784:Occupational Diseases / Q000517:prevention & control*; D009787:Occupational Medicine / Q000592:standards*; D010756:Phosphoric Acids / Q000633:toxicity*
D010756:Phosphoric Acids
Opyt uluchsheniia usloviĭ truda v proizvodstve ekstraktsionnoĭ fosfornoĭ kisloty na baze nizkosortnykh fosforitov.