Metadata Description
A set of web services (APIs) for programs to use when working with units from the Unified Code for Units of Measure (UCUM) system.
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organization in the United States.
A .gov website belongs to an official government
organization in the United States.
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Share sensitive information only on official, secure websites.
A lock (🔒) or https:// means you've safely connected to the .gov website.
Share sensitive information only on official, secure websites.