40
Production of oil, natural gas and other hydrocarbon products; extracting, processing and refining of oil, petroleum products, gas and other hydrocarbon products; offshore oil and natural gas production; professional and technical consultancy and analysis in the field of energy and upstream energy, namely, generation and production of energy
42
Exploration and development of oil, petroleum, natural gas and other hydrocarbon resources, including oil and gas field exploration; professional and technical consultancy and analysis in the field of energy and upstream energy, namely, consultancy and analysis in the field of exploration and development of oil, petroleum, natural gas and other hydrocarbon resources; computer programming; design, development and updating of software, databases and databanks in the energy industry, including the upstream oil and natural gas industries
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