Observer Differences in the North American Breeding Bird...

The Auk 1994 / 04 Vol. 111; Iss. 1

Observer Differences in the North American Breeding Bird Survey

John R. Sauer, Bruce G. Peterjohn and William A. Link
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Volume:
111
Language:
english
Journal:
The Auk
DOI:
10.2307/4088504
Date:
April, 1994
File:
PDF, 462 KB
english, 1994
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