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Forktail No.4-6(1989-1991)
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A review of larger Philippine swiftlets of the genus Collocalia
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By: Dickinson, Edward C.
Type: Article
In: Forktail
Volume: 4
Date: 1989
Page Range: 19--53
Publication info: Oxford,
A review of smaller Philippine swiftlets of the genus Collocalia
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By: Dickinson, Edward C.
Type: Article
In: Forktail
Volume: 5
Date: 1989
Page Range: 23--34
Publication info: Oxford,