400. That’s an error.

Google cannot redirect you to http://content.cdlib.org/xtf/view?docId=ft6q2nb3wh&doc.view=content&chunk.id=nsd0e6502&toc.depth=1&anchor.id=0&brand=eschol 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.