Reference:Hagstr1916a
Verbatim text: Hagström, J. O. 1916. Critical researches on the potamogetons. Kungl. Svenska Vetenskapsakad. Handl., n. s. 55(5): 1--281.
Author: Hagström, J.O.
Year: 1916
Title: Critical researches on the potamogetons. Kungl. Svenska Vetenskapsakad. Handl., n. s.
Volume: 55
Pages: 1–281