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By: Schoorl, J WType: ArticleIn: Entomologische berichtenVolume: 59Series:Issue: 5Date: 1999Page Range: 68--70Publication Info: AmsterdamSubjects:
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By: Schoorl, J WType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 107Series:Issue:Date: 1987Page Range: 165--168Publication Info: London, British Ornithologists' Club, 1893-Subjects: