Sabemos que ya estaba incluido en el Tratado de Roma, sabemos que se ha aplicado desde las primeras sentencias del Tribunal de Justicia Europeo, que ya fue regulado por una directiva de 1975, y
We know that it was already included in the Treaty of Rome, we know that it has been applied since the very first judgments of the European Court of Justice, that it was already regulated by a directive dating back to 1975, and