Changing to the metric system conversion factors, symbols and definitions
Anderton, Pamela.
Bigg, Philip Harold.
Swindells, Basil.
National Physical Laboratory (Great Britain)
London H.M.S.O. [for the] National Physical Laboratory
1979
Previous ed.: / by Pamela Anderton and B. Swindells. 1972
Bibliography: p.47-48. - Includes index
Metric system.