Since 1973, Hart Energy Publishing, LLLP has been one of the worlds largest publishers of the energy industry. Based in Houston, Texas, the firm provides information on the global energy market. It publishes a wide range of magazines, newsletters, directories, conferences, consulting services and online resources. Hart Energy Publishing, LLLPs editorial team produces more than 25 individual titles for the oil and gas industry. Some of its magazines include Oil and Gas Investor, Harts E&P, Pipeline and Gas Technology and Fuel. The publishing firm caters to its customers through various websites, such as Oil and Gas Investor, E&P, Unconventional Gas Center, ADCenter.com, Hart Energy Conferences, WorldFuels.com and IFQC BioFuels.