hemlock: References & Edit History

Article Contributors

Primary Contributors

  • The Editors of Encyclopaedia Britannica
    Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.

Other Encyclopedia Britannica Contributors

Article History

Type Description Contributor Date
Add new Web site: Healthline - Hemlock Poisoning. Aug 30, 2025
Add new Web site: University of North Georgia - Environmental Leadership Center - Hemlock Ecology. Jul 25, 2022
Add new Web site: WebMD - Hemlock. Aug 15, 2021
Replaced photograph. Feb 16, 2018
Add new Web site: Arbour Day Foundation - Hemlock. Mar 23, 2017
Add new Web site: Oregon State University - Common Trees of the Pacific Northwest - Hemlock. Mar 23, 2017
Add new Web site: Botanical.com - Hemlock. Mar 02, 2014
Added new Web site: How Stuff Works - Science - Hemlock. Jan 02, 2009
Article revised and updated. Sep 03, 2008
Added new Web site: Environmental Education For Kids - The Hemlock. Jun 30, 2008
Added new Web site: The Encyclopedia of New Zealand - Hemlock. May 11, 2007
Article revised. Feb 01, 2002
Article added to new online database. Jul 20, 1998
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