400. That’s an error.

Google cannot redirect you to http://www.abebooks.de/servlet/SearchResults?tn=Neues+topographisch-statistisch-geographisches+W%C3%B6rterbuch+des+Preussischen+Staats 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.