400. That’s an error.

Google cannot redirect you to http://www.jpc.de/jpcng/books/detail/-/art/Peter-de-Mendelssohn-Tageb%FCcher-1940-1943/hnum/7592505?iampartner=froogle 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.