Category:1921 in transport in Russia
Countries of Europe: France‡ · Italy · Norway · Poland · Portugal‡ · Russia‡ · Spain‡ · Switzerland · United Kingdom
‡: partly located in Europe
‡: partly located in Europe
Countries of Asia: People's Republic of China · Egypt‡ · Indonesia‡ · Japan · Russia‡
‡: partly located in Asia
‡: partly located in Asia