Verbatim text: John, H. 1962. Monograph of the genus Elodea (Hydrocharitaceae): Part I. The species found in the Great Plains, the Rocky Mountains, and the Pacific states and provinces of North America. Res. Stud. State Coll. Wash. 30(2): 19--44. St.
Author: John, H.
Year: 1962
Title: Monograph of the genus Elodea (Hydrocharitaceae): Part I. The species found in the Great Plains, the Rocky Mountains, and the Pacific states and provinces of North America
Journal: Res. Stud. State Coll. Wash
Volume: 30
Pages: 19–44