- Physical Description: 1 online resource (5 pages) : illustrations.
- Publisher: Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, 2013.
Contributed record: Metadata reviewed, not verified. Some fields updated by batch processes.
Title from PDF title page (viewed February 13, 2013).
|Bibliography, etc. Note:||
Includes bibliographical references.
Search for related items by subject
|Subject:||Time measurements > Standards.
Time > Systems and standards > United States.