Historisch-kritische Studien ?ber Goethe als Naturforscher. This book, "Historisch-kritische Studien ?ber Goethe als Naturforscher", by Jakob Hermann Friedrich Kohlbrugge, is a replication of a book originally published before 1900. 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.