gram Pubblico Deposited
Standard metric system unit of mass = 0.001 that of the platinum-iridium cylinder at the National Bureau of Standards or its twin at the International Bureau of Weights and Measures, Paris.
- Breen Encyclopedia
Standard metric system unit of mass = 0.001 that of the platinum-iridium cylinder at the National Bureau of Standards or its twin at the International Bureau of Weights and Measures, Paris.
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