Verbatim text: Fredskild, B. 1991. The genus Betula in Greenland---Holocene history, present distribution, and synecology. Nordic J. Bot. 11: 393--412.
Author: Fredskild, B.
Year: 1991
Title: The genus Betula in Greenland---Holocene history, present distribution, and synecology
Journal: Nordic J. Bot
Volume: 11
Pages: 393–412