IEEE C136.6-1997 American National Standard for Roadway Lighting Equipment - Metal Heads and Reflector Assemblies - Mechanical and Optical Interchangeability
IEEE - The Institute of Electrical and Electronics Engineers@ Inc.
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IEEE C136.6-1997
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1997IEEE C136.6-1997 American National Standard for Roadway Lighting Equipment - Metal Heads and Reflector Assemblies - Mechanical and Optical Interchangeability