Reference:John1965a
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Verbatim text: John, H. 1965. Monograph of the genus Elodea: Part 4 and summary: The species of eastern and central North America. Rhodora 67: 1--—35, 155--180.
Author: John, H.
Year: 1965
Title: Monograph of the genus Elodea: Part 4 and summary: The species of eastern and central North America
Journal: Rhodora
Volume: 67
Pages: 1–35, 155-180