The international (SI) metric system and how it works
Subtitle: new (SI) units and changes included
By: [by Robert A. Hopkins.
Publisher: AMJ Pub. Co.
Published: 1973
Place of publication: Tarzana, Calif
Language: eng
Number of pages: 281
Subjects: Metric system -- United States.; Weights and measures -- United States.
Notes: Includes bibliographical references.