400. That’s an error.

Google cannot redirect you to http://worldcat.org/search?q=Bibliorum+sacrorum+latinae+versiones+antiquae,+seu+vetus+Italica,+et+Caeterae+quaecunque+Codicibus+Mss.+antiquorum+libris+reperiri+potuerunt:+Quae+cum+Vulgata+Latina,+cum+Textu+Graeco+comparantur.+Accedunt+Praefationes,+Observationes,+ac+Notae,+Indexque+novus+ad+Vulgatam+è+regione+editam,+idemque+locupletissimus.+Operâ+studio+D.+Petri+Sabatier,+Ordinis+Sancti+Benedicti,+è+Congregatione+Sancti+Mauri.+Tomus+primus+[-+Tomus+tertius] 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.