Reference:Cook1984b
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Verbatim text: Cook, C. D. K. and K. Urmi-König. 1984. A revision of the genus Ottelia (Hydrocharitaceae). 2. The species of Eurasia, Australasia, and America. Aquatic Bot. 20: 131--177.
Author: Cook, C.D.K., Urmi-König, K.
Year: 1984
Title: A revision of the genus Ottelia (Hydrocharitaceae). 2. The species of Eurasia, Australasia, and America
Journal: Aquatic Bot
Volume: 20
Pages: 131–177