Distribution and abundance of Least Bell's Vireos (Vireo bellii pusillus) and Southwestern Willow Flycatchers (Empidonax traillii extimus) on the Middle San Luis Rey River, San Diego County, southern California : ... data summary.
| Format: | Government Document Serial |
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| Language: | English |
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Reston, Virginia :
U.S. Department of the Interior, U.S. Geological Survey
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| Series: | Data series (Geological Survey (U.S.))
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| Subjects: | |
| Online Access: | https://purl.fdlp.gov/GPO/gpo183147 |