Agriculture.- 27 Plant Production.- 28 Plant Protection.- 29 Forestry.- 30 Livestock Farming.- 31 Veterinary Services.- 32 Fisheries and Aquaculture.- 33 Agricultural Engineering.- 34 Irrigation.- Mining and Energy.- 35 Reconnaissance, Prospection and Exploration of Geological Resources.- 36 Surface Mining.- 37 Underground Mining.- 38 Minerals Handling and Processing.- 39 Petroleum and Natural Gas Exploration, Production, Handling, Storage.- 40 Coking Plants, Coal-to-gas Plants, Gas Production and Distribution.- 41 Thermal Power Stations.- 42 Power Transmission and Distribution.- 43 Renewable Sources of Energy.- Trade and Industry.- 44 Nitrogenous Fertilisers (Raw Materials, Ammonia and Urea Production).- 45 Nitrogenous Fertilisers (Starting Materials and End Products).- 46 Cement and Lime, Gypsum.- 47 Ceramics Fine, Utilitarian and Industrial.- 48 Glass.- 49 Iron and Steel.- 50 Non-ferrous Metals.- 51 Mechanical Engineering, Workshops, Shipyards.- 52 Agro-industry.- 53 Slaughterhouses and Meat Processing.- 54 Mills Handling Cereal Crops.- 55 Vegetable Oils and Fats.- 56 Sugar.- 57 Timber, Sawmills, Wood Processing and Wood Products.- 58 Pulp and Paper.- 59 Textile Processing.
