Business All Other Professional Professional Copper Religious All Other Telecommunications All Other Telecommunications Other Professional All Other Telecommunications Architectural Research and Development in the Physical Other Similar Organizations (except Business All Other Professional Management Other Similar Organizations (except Business Research and Development in the Physical Copper Professional

Iron, lead, zinc, tin and copper Architectural, engineering and planning services Engineering, auxiliary, average, loss, actuarial and salvage insurance services Publications Architectural, engineering and surveying services Structural works Lead Surveying, hydrographic, oceanographic and hydrological instruments and appliances Other services Architectural, construction, engineering and inspection services Postal orders Dates

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Building Environment and Pollution-Recycling Automobiles and Auto Parts Supply Architecture Engineering Postal and Courier Services Printing and Publishing Services Cement and Asbestos Products Education and Training Electricity Construction Consultancy Energy-Power and Electrical Computer Hardwares and Consumables Steel Building Material Construction Materials