Verbatim text: Drumke, J. S. 1965. A systematic survey of Corylus in North America. Diss. Abstr. 25: 4925--4926.
Author: Drumke, J.S.
Year: 1965
Title: A systematic survey of Corylus in North America
Journal: Diss. Abstr
Volume: 25
Pages: 4925–4926