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A - occupational safety and health
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B - physics, chemistry and natural phenomena
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C - inorganic chemicals
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D - organic compounds
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E - enzymes
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F - natural products and substances
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Fa - plants
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Fe - plant products
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Fg - genetically modified organisms
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Fi - animals
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Fm - microorganisms
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Fo - animal products
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Fr - biochemical substances
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Fu - minerals
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Fy - substances
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Fyd - dangerous substances
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Fyda - corrosive substances
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Fydaf - corrosive fumes
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Fyde - explosive substances
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Fydem - exothermic mixtures
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Fydf - flammable substances
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Fydfd - flammable dust
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Fydff - low melting point solids
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Fydfg - flammable gases
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Fydfl - flammable liquids
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Fydfs - substances liable to spontaneous combustion
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Fydfu - substances emitting flammable gases
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Fydg - pyrophoric substances
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Fydk - combustible substances
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Fydkl - combustible liquids
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Fydks - combustible solids
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Fydky - flammability
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Fydo - oxidizing substances
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Fyf - fire resistant substances
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Fyfl - low-flammability liquids
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Fyh - harmful substances
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Fyha - caustic substances
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Fyhe - irritants
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Fyhep - primary irritants
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Fyhg - allergens
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Fyhgb - bronchoconstrictors
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Fyhi - antigens
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Fyhia - Australia antigen
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Fyhic - Candida antigen
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Fyhk - teratogens
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Fyhm - mutagens
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Fyhn - narcotics
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Fyho - asphyxiants
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Fyhp - photodynamic substances
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Fyhr - radioactive substances
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Fyhs - carcinogens
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Fyhsc - cocarcinogens
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Fyht - toxic substances
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Fyhta - toxic gases
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Fyhti - toxic liquids
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Fyhtm - toxic metabolites
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Fyhu - radiomimetic substances
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Fyhy - half life
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Fyi - inert substances
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Fyid - inert dust
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Fyj - soluble substances
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Fyjo - solubility
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Fyjow - solubility in water
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Fyjp - partition coefficient
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Fyjv - dissolution velocity
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Fyk - volatile substances
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Fykl - lacrimating agents
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Fykt - temperature-vapour pressure ratio
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Fykv - volatility
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Fym - cold substances
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Fyn - hot substances
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Fyp - dust
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Fypa - airborne dust
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Fypar - respirable dust
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Fype - deposited dust
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Fypes - particle deposition
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Fypi - mineral dust
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Fypin - mineral fibres
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Fypins - short-fibred dust
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Fypinu - fibre structure
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Fypn - nanoparticles
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Fypo - organic dust
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Fypog - grain dust
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Fypop - pollen
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Fypow - wood dust
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Fypp - mixed dust
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Fypu - particle size
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Fypud - particle size distribution
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Fypum - mass concentration
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Fypun - number concentration
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Fypus - aerodynamic size
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Fyput - particle surface area
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Fypw - surface properties
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Fypx - particle dynamics
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Fypz - dust level
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Fys - substances by state
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Fysa - solids
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Fysac - crystals
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Fysi - fluids
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Fysig - gases
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Fysigc - compressed gases
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Fysigd - dissolved gases
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Fysigl - liquefied gases
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Fysil - liquids
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Fysilm - molten materials
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Fysm - mixtures
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Fysma - gas-air mixtures
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Fyso - solutions
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Fysu - suspensions
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Fysy - colloids
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Fysya - aerosols
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Fysyam - mists
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Fysye - emulsions
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Fysyg - gels
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Fysym - foams
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Fysyma - air foam
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G - industrial products
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H - equipment, workplaces and operations
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I - equipment, workplaces and operations (2)
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J - equipment, workplaces and operations (3)
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K - work and industrial organization
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L - fire, explosions
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M - occupational pathology
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N - occupational pathology (cont.)
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P - physiology, anatomy, psychology
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Q - measurement and investigation
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R - medical prevention and treatment
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S - safety and health engineering
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T - personal protective equipment
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V - safety and health organization
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W - groups of persons
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X - industries
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Y - occupational accidents
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Z - generalities
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1 - Africa
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2 - America
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3 - Asia
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4 - Europe
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5 - Oceania
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6 - geographical areas
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7 - international governmental organizations (non UN)
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8 - UN organizations
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9 - international non-governmental organizations
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