Useful links

• American Gas Association - About Natural Gas 
• American National Standards Institute (ANSI) 
• American Petroleum Institute  
• American Society of Mechanical Engineers 
• Bureau of Indian standards (BIS)  
• City Gas Blog  
• Gas Industry Standards and BSI Kitemarking Process 
• Informative site on natural gas distribution 
• Institution of Gas Engineers & Managers (IGEM)  
• International Organization of Legal Metrology 
• MCX India - Natural Gas Product Definition 
• Ministry of Petroleum and Natural Gas (MOPNG)  
• National Fire Protection Association 
• Natural Gas - General Information 
• Natural Gas - General Information 
• Natural Gas - General Information  
• Office of the Gas and Electricity Markets (OFGEM) 
• Oil Industry Safety Directorate (OISD) 
• Petroleum & Natural Gas Regulatory Board (PNGRB) 
• Piping Design 
• The Energy and Resources Institute (TERI)