| 词条 | European route E421 |
| 释义 | {{Infobox road | country = EUR | type = E | route = 421 | map = | terminus_a = Eynatten (Belgium) | junction = | terminus_b = Luxembourg | countries = Belgium, Luxembourg }}E 421 is a European B class road in Belgium and Luxembourg, connecting the cities Eynatten - Eupen - St. Vith - Luxembourg
3 : International E-road network|Roads in Belgium|Roads in Luxembourg |
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