Reference:Svenson1944a
Revision as of 12:37, 20 August 2020 by imported>Unknown user
Verbatim text: Svenson, H. K. 1944. The New World species of Azolla. Amer. Fern J. 34: 69--84.
Author: Svenson, H.K.
Year: 1944
Title: The New World species of Azolla
Journal: Amer. Fern J.
Volume: 34
Pages: 69–84