https://share.libertas.sm/share.php?url=aHR0cHM6Ly93d3cubGliZXJ0YXMuc20vc2FuLW1hcmluby10ZXJyZW1vdG8tZXBpY2VudHJvLXJhdmVubmEtNC01LXJlZ2lzdHJhdG8tZGFsLXNpc21vZ3JhZm8tZGktY2Fzb2xlLTYyODAxLw==
San Marino. Terremoto, epicentro Ravenna (4.5). Registrato dal sismografo di Casole