Optimizing the duration of point counts for monitoring trends in bird populations /
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| Main Author: | |
|---|---|
| Format: | Texto biblioteca |
| Language: | d |
| Published: |
Berkeley, Calif. : U.S. Dept. of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station,
1988
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| Subjects: | BIRD POPULATIONS-MEASUREMENT, Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.), |
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