The Forum - How the metre changed the world - Â鶹¹ÙÍøÊ×Ò³Èë¿Ú Sounds

The Forum - How the metre changed the world - Â鶹¹ÙÍøÊ×Ò³Èë¿Ú Sounds


How the metre changed the world

The universal unit of length that joined up the globe

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