400. That’s an error.

Google cannot redirect you to http://www.abebooks.fr/servlet/SearchResults?tn=Manuel+typographique,+utile+aux+gens+lettres,+%C3%A0+ceux+qui+exercent+les+diff%C3%A9rentes+parties+l%27art+l%27imprimerie.+%5BFollowed+by%5D+R%C3%A9ponse+%C3%A0+un+m%C3%A9moire+publi%C3%A9+1766,+par+mm.+%5BN.+P.F.%3F%5D+Gando+au+sujet+des+caract%C3%A8res+fonte+pour+musique 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.