400. That’s an error.

Google cannot redirect you to http://worldcat.org/search?q=Tabulae+sinuum,+tangentium,+et+secantium,+et+logarithmi+sinuum,+tangentium,+et+numerorum+ab+unitate+ad+10000.+Cum+methodo+facillima+illarum+ope+resolvendi+...+ab+A.+Vlacq+adriaan+vlacq 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.