Air Pollution - prevention & control, Pilot Projects, Animals, Housing, Animal, Swine, Ammonia - isolation & purification, Air Pollutants - adverse effects, Air Pollutants - isolation & purification, Germany, Filtration - instrumentation, Odorants - prevention & control
CO2, CO 2, global warming, climate change, greenhouse effect, greenhouse effect gases, emisiones de gases de efecto invernadero, carbon dioxide