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Citizen Science Based Monitoring of Greylag goose (Anser anser) in Bavaria (Germany): Combining Count Data and Bag Data to Estimate Long-Term Trends between 1988/89 and 2010/11 [期刊论文]
PLOS ONE, 2015-01-01, 10 (6
Andreas Grauer;  Andreas König;  Nils Bunnefeld
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