Verhandlungen des Botanischen Vereins der Provinz Brandenburg. This book, "Verhandlungen des Botanischen Vereins Jahrgang 21", by P. Ascherson, E. Koehne, F. Kurtz, is a replication of a book originally published before 1880. 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.