Friedrich Ruttner Biogeography and Toxonomy of Honeybees - Berlin Springer Verlag 1988 - 284p Friedrich Ruttner: Biogeography and Toxonomy of Honeybees. Berlin. Springer Verlag, 1988. 3-540-17781-7--(638.1RUT) ENGLISH ISBN: 3-540-17781-7 Dewey Class. No.: 638.1 / RUT