Content in this edit is translated from the existing Spanish Wikipedia article at [[:es:B-21 (autovía)]]; see its history for attribution.
{{Translated|es|B-21 (autovía)}}
The Autovía B-21 is a Spanish motorway that is an access road to the Port of Barcelona from the A-2 and the B-20 (Ronda de Dalt).[1]
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