400. That’s an error.

Google cannot redirect you to http://worldcat.org/search?q=Paradiso+de'+contemplatiui.+Parte+quarta.+Della+luce+dell'anima.+Composto+dal+r.p.f.+Bartolomeo+da+Salutio,+minore+osseruante+riformato.+Opera+utilissima,+necessaria+per+quelli,+che+da+douero+vogliono+attendere+alla+vita+contemplatiua+bartolomeo+:+da+saluzzo 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.