There has been data ("Jahre der Entscheidung: Der kaiserlich-deutsche Staatssekretär des Auswärtigen Amts Oswald Frhr. v. Richthofen, 1847-1906") available for this ISBN from the data sources that books-by-isbn.com uses, but not on the latest request on Fri Feb 28 11:42:41 2020, so the data displayed here has been removed .