400. That’s an error.

Google cannot redirect you to http://worldcat.org/search?q=Précis+Gnomonique+à+l'usage+MM.+les+curés+et+desservants,+ou+moyen+simple+et+facile+tracer+les+cadrans+solaires,+horizontal+et+vertical,+avec+l'aide+seule+règle+et+du+compas.+Orné+d'un+cadran+modèle,+etc+e.+monot 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.