404. That’s an error.
The requested URL /books?id=Un0n3TC7AYEC&dq=editions:STANFORD36105007100576&output=html_text&lr=&sitesec=reviews was not found on this server. That’s all we know.
/books?id=Un0n3TC7AYEC&dq=editions:STANFORD36105007100576&output=html_text&lr=&sitesec=reviews