Reference:Sudworth1917a
Revision as of 12:38, 20 August 2020 by imported>Unknown user
Verbatim text: Sudworth, G.B. 1917. The Pine Trees of the Rocky Mountain Region. Washington. [U.S.D.A. Bull. 460.]
Author: Sudworth, G.B.
Year: 1917
Title: The Pine Trees of the Rocky Mountain Region
Journal: U.S.D.A. Bull
Volume: 460