Labor economics, Pollutant emissions, Economic disciplines, Mining methods, Countries, Environmental policy, Fossil fuels industries, Political geography, Chalcogens, Fuels, Industrial sectors, Labor, Industry, Mining, Engineering, Political science, Emission allowances, Employment, Coal, Environmental studies, Sulfur, Pollutants, Business, Economics, Human...
Prospective Studies, Humans, Middle Aged, Male, Treatment Outcome, Abdominal Wound Closure Techniques, Surgical Wound Infection - prevention & control, Bacteria - isolation & purification, Aged, 80 and over, Bacteria - classification, Adult, Female, Aged, Surgical Wound Infection - microbiology, Digestive System Surgical Procedures - methods
Environment, Earth Sciences, Dewey: 551.79, LCC: QE696