The International Metric System of Weights and Measures (open access)

The International Metric System of Weights and Measures

General overview of the metric system.
Date: May 26, 1932
Creator: unknown
System: The UNT Digital Library
Mollier Chart of Properties of Ammonia, 1923 (open access)

Mollier Chart of Properties of Ammonia, 1923

Mollier chart of properties of ammonia.
Date: May 1, 1923
Creator: United States. Bureau of Standards.
System: The UNT Digital Library