MotoGP Fan Zone on Twitter: "Dario Ambrosini (14, Benelli) won the 250cc race at Bremgarten from Bruno Ruffo #12, Gianni Leoni #10. 1951 Swiss GP https://t.co/poy9B3SwVi" / Twitter
Motomondiale, Dario Ambrosini: 70 anni fa la morte in pista dell'eroe Benelli | Gazzetta.it