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  1. 1
    Published 1981
    Subjects “...Birds Counting Congresses....”
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    Estimating numbers of terrestrial birds : proceedings of an international symposium held at Asilomar, California, October 26-31, 1980 /
  2. 2
    Published 2004
    Subjects “...Bird populations Congresses....”
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    Monitoring bird populations using mist nets /

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