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May 3, 2012
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Lucille Tower submitted the one-millionth observation; here, she examines a vine maple.
Lucille Tower examines a vine maple on the PSU Portland Budwatch trail. Tower submitted the one-millionth observation to the USA National Phenology Network.
Credit: Ruben Garcia
Images credited to the National Science Foundation, a federal agency, are in the public domain. The images were created by employees of the United States Government as part of their official duties or prepared by contractors as "works for hire" for NSF. You may freely use NSF-credited images and, at your discretion, credit NSF with a "Courtesy: National Science Foundation" notation.
Additional information about general usage can be found in Conditions.
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Related story: Nature Observation Database Receives One-Millionth Entry