Addysg nwyddau / gwasanaethau Our World in Data 5.0 5.0 allan o 5 seren (yn seiliedig ar 1 adolygiad) Ardderchog100%Da iawn0%Cyfartaledd0%Gwael0%Ofnadwy0% Gantradefree_azrarp29/01/2023 Our World in Data (OWID) is a scientific online publication that focuses on large global Darllen mwy