The international (SI) metric system and how it works
Subtitle: new (SI) units and changes included
By: by Robert A. Hopkins.
Edition: 3rd ed. rev.
Publisher: AMJ Pub. Co.
Published: 1973
Place of publication: Tarzana, Calif
Language: eng
Number of pages: 281
Subjects: Metric system; Weights and measures -- United States
Notes: Includes bibliographical references.