U.S. Geological Survey Open-File Report 2012-1038
Figure A18. Photograph of Achillea millefolium (common yarrow) flowers in foreground with Symphyotrichum subspicatum (Douglas aster) and Grindelia stricta (coastal gumweed) in background found at prioritization site Y1 in fig. 6 in the Yaquina estuary, Oregon. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, August 2010. |
First posted May 10, 2013
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