pondweed: References & Edit History
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Article History
| Type | Description | Contributor | Date |
|---|---|---|---|
| Invalidated site: The Canadian Encyclopedia - Pondweed. | Jan 09, 2018 | ||
| Added information on distribution and classification. | Jun 27, 2014 | ||
| Added new Web site: Pennsylvania Department of Conservation and Natural Resources - Curly Pondweed. | Jan 08, 2009 | ||
| Added new Web site: Washington State Department of Ecology - Sago Pondweed. | Jan 08, 2009 | ||
| Added new Web site: The Canadian Encyclopedia - Pondweed. | Jan 08, 2009 | ||
| Media added. | Jun 30, 2008 | ||
| Article added to new online database. | Jul 20, 1998 |
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