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- National Automatic Sprinkler and Fire Control Association, Inc. (1)
- National Automobile Theft Bureau (1)
- National Automobile Threft Bureau (1)
- National Board of Fire Underwriters (25)
- National Building Research Institute (1)
- National Building Technology Center (11)
- National Bureau of Standards (147)
- National Bureau of Standards (NBS) Technical News Bulletin (1)
- National Bureau of Standards Dimensions (1)
- National Bureau of Standards Technical News Bulletin (4)