400. That’s an error.

Google cannot redirect you to http://worldcat.org/search?q=Vngnadische+Chronika,+darinnen+der+Herren+Vngnaden+Ankunft,+Auszbreitunge,+Reisen+...+verzeichnet+werden+vom+Keiser+Cunrad+III+...+biß+auff+dieses+1601.+Jahr+(etc.)+matthaeus+dresser because the request was invalid.

This might be because the link was created a long time ago. Try your search again on Google. That’s all we know.