TY  - BOOK
AU  - Hopkins,Robert A.
TI  - The international (SI) metric system and how it works
PY  - 1974///, c1973
CY  - [Tarzana, Calif.
PB  - AMJ Pub.]
KW  - Metric system
KW  - Weights and measures
KW  - United States
N1  - Includes bibliographical references
UR  - http://www.archive.org/details/internationalsim00hopk
UR  - http://www.openlibrary.org/books/OL24210903M
ER  -