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December 2021.
Retrieved 21
December 2021. "OFICIAL |
Convocatoria para el
minitorneo Sub-19" [OFFICIAL | Call-up for the under-19 min-tournament] (in Spanish)...
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January 2023. "España sub 19, con Óscar
Sielva de titular, comenzó el
minitorneo con
goleada (5–1) ante Macedonia" [Spain
under 19s, with Óscar Sielva...