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Materias / palabras clave: Technology: Electrical engineering. Electronics. Nuclear engineering: Nuclear engineering. Atomic power; Science: Physics: Nuclear and particle physics. Atomic energy. Radioactivity

Materias / palabras clave: Technology: Environmental technology. Sanitary engineering: Municipal refuse. Solid wastes

Materias / palabras clave: Technology: Environmental technology. Sanitary engineering; Social Sciences: Industries. Land use. Labor: Management. Industrial management: Standardization. Simplification. Waste

Materias / palabras clave: Technology: Environmental technology. Sanitary engineering: Municipal refuse. Solid wastes; Social Sciences: Industries. Land use. Labor: Management. Industrial management: Standardization. Simplification. Waste

Materias / palabras clave: Social Sciences: Industries. Land use. Labor: Management. Industrial management; Technology: Environmental technology. Sanitary engineering

Materias / palabras clave: Agriculture: Agriculture (General); Technology: Environmental technology. Sanitary engineering

Materias / palabras clave: Technology: Environmental technology. Sanitary engineering

Materias / palabras clave: Technology: Hydraulic engineering: River, lake, and water-supply engineering (General); Technology: Hydraulic engineering: Irrigation engineering. Reclamation of wasteland. Drainage

Materias / palabras clave: Technology: Environmental technology. Sanitary engineering: Water supply for domestic and industrial purposes; Technology: Environmental technology. Sanitary engineering: Sewage collection and disposal systems. Sewerage

Materias / palabras clave: Technology: Environmental technology. Sanitary engineering: Water supply for domestic and industrial purposes