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The National and the International Fuel Gas Codes
2006 NFGC-IFGC Comparison Summary
Comparison of the 2002 National Fuel Gas Code and the 2003 International Fuel Gas Code
Comparison of the 1999 National Fuel Gas Code and the 2000 International Fuel Gas Code
Cross Reference Tables - 2002 National Fuel Gas Code / 2003 International Fuel Gas Code

 Comparison of the 1999 National Fuel Gas Code and the 2000 International Fuel Gas Code 

 
 

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