[Emissions from combustion of fuelwood in boilers and stoves]

agentes nocivos bois de chauffage bois rond combustible combustibles contaminantes contaminantes industriales desechos energia energie energy energy sources facteur nuisible forest products formulaciones formulation formulations fuels fuelwood gas residual humo industrial pollutants injurious factors madera en rollo natural resources physical states polluant polluant industriel pollutants productos productos forestales products produit produit forestier recursos recursos naturales resources ressource ressource naturelle roundwood smokes waste gases wastes