Roger Woodson, "International Fuel Gas Code Companion: Interpretation, Tactics, and Techniques" English | 2007 | ISBN: 0071498966 | PDF | pages: 241 | 3.6 mb
Mark W. Earley, Jeffrey S. Sargent, Joseph V. Sheehan, "NEC 2005 Handbook: NFPA 70: National Electric Code; International Electrical Code Series" 2005 | pages: 1335 | ISBN: 0877656258 | PDF | 88,1 mb
NFPA 72: National Fire Alarm and Signaling Code, 2016 Edition by National Fire Protection Association English | 2016 | ISBN: 145591164X, 9781455911646 | 369 Pages | PDF | 9.75 MB
National Fire Protection Association (NFPA), "NFPA 70, National Electrical Code (NEC): 2023 Edition" English | 2023 | ISBN: 1455930350 | 918 pages | PDF | 275 MB