SI, the International System of Units /
International Bureau of Weights and Measures.
Page, Chester H.
Vigoureux, Paul.
National Physical Laboratory (Great Britain)
London H.M.S.O. [for the] National Physical Laboratory
1977
Translation of: 'Le système international d'unités'. Revised ed. Paris : The Bureau, 1977. - Previous ed.: of this translation. London : H.M.S.O., 1973
Includes index
Metric system.