User:Χρυσάνθη Λυκούση
Representatives from seventeen countries signed the Metre Convention which set up an institute for the purpose of coordinating international metrology and for coordinating the development of the metric system.
×
![]()
×
![]()
Representatives from seventeen countries signed the Metre Convention which set up an institute for the purpose of coordinating international metrology and for coordinating the development of the metric system.