41 Teaching in the fields of [ water resources, water treating and purifying, treatment of waste, destruction of waste and trash, urban cleansing, waste collection, sewerage maintenance, maintenance vehicles and equipment, waste management, ] customer reception [, transportation, maintenance of industrial installations, maintenance of energy and climate control systems, environmental protection, sustainable development and transport services ] ; educational training services, namely, the provision of apprenticeships in the fields of [ water resources, water treating and purifying, treatment of waste, destruction of waste and trash, urban cleansing, waste collection, sewerage maintenance, maintenance vehicles and equipment, waste management, ] customer reception [, transportation, maintenance of industrial installations, maintenance of energy and climate control systems, environmental protection, sustainable development and transport services ] ; arranging and conducting of seminars, conferences and colloquiums in the fields of [ water resources, water treating and purifying, treatment of waste, destruction of waste and trash, urban cleansing, waste collection, sewerage maintenance, maintenance vehicles and equipment, waste management, ] customer reception [, transportation, maintenance of industrial installations, maintenance of energy and climate control systems, environmental protection, sustainable development and transport services ] ; publishing of books, magazines, journals on [ environmental protection and on the training and teaching of individuals in the fields of water resources, water treating and purifying, treatment of waste, destruction of waste and trash, urban cleansing, waste collection, sewerage maintenance, maintenance vehicles and equipment, waste management, ] customer reception [, transportation, maintenance of industrial installations, maintenance of energy and climate control systems, environmental protection, sustainable development and transport services ] ; multimedia publishing of books, magazines, journals [, software, games, ] and electronic publications [ on environmental protection and ] on the training and teaching of individuals in the fields of [ water resources, water treating and purifying, treatment of waste, destruction of waste and trash, urban cleansing, waste collection, sewerage maintenance, maintenance vehicles and equipment, waste management, ] customer reception [, transportation, maintenance of industrial installations, maintenance of energy and climate control systems, environmental protection, sustainable development and transport services; educational entertainment services, namely, arranging of game competitions on the topics of water resources, environmental protection, sustainable development; providing online non-downloadable electronic publications used for training in the field of water resources, water treating and purifying, treatment of waste, destruction of waste and trash, urban cleansing, waste collection, sewerage maintenance, maintenance vehicles and equipment, waste management, customer reception, transportation, maintenance of industrial installations, maintenance of energy and climate control systems, environmental protection, sustainable development and transport services; arranging and conducting of educational examination in the field of water resources, water treating and purifying, treatment of waste, destruction of waste and trash, urban cleansing, waste collection, sewerage maintenance, maintenance vehicles and equipment, waste management, customer reception, transportation maintenance of industrial installations, maintenance of energy and climate control systems, environmental protection, sustainable development and transport services; videotape recording and filming services for others; film production ] ; providing information on training in the fields of [ water resources, water treating and purifying, treatment of waste, destruction of waste and trash, urban cleansing, waste collection, sewerage maintenance, maintenance vehicles and equipment, waste management, ] customer reception [, transportation, maintenance of industrial installations, maintenance of energy and climate control systems, environmental protection, sustainable development and transport services; electronic desktop publishing for others ] ; providing advice on training in the fields of [ water resources, water treating and purifying, treatment of waste, destruction of waste and trash, urban cleansing, waste collection, sewerage maintenance, maintenance vehicles and equipment, waste management, ] customer reception [, transportation, maintenance of industrial installations, maintenance of energy and climate control systems, environmental protection, sustainable development and transport services ]