This book, "Die Astronomie Nach Newtons Grundsäkzen Erklärt. Nebst Einem Anhange Vun Gebrauch Der Erd- Und Himmerskugel (German Edition)", by James Ferguson, is a replication. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.