400. That’s an error.

Google cannot redirect you to http://worldcat.org/search?q=Histoire+Napoléon+et+Grande+Armée+pendant+l'année+1812+...+et+examen+critique+par+le+Général+Gourgaud+philippe-paul+comte+ségur 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.