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| Attachment | Size |
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| On birds from the mid_Okavango valley on the South West Africa_Angola border.pdf | 833.32 KB |
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| The austral races of the Redbilled firefinch Lagonosticta senegala.pdf | 286.93 KB |
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| On the Lesser Grey Shrike Lanius minor Gmelin in southern Africa.pdf | 427.81 KB |
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| The mainland Afrotropical subspecies of the Little Swift Apus affinis.pdf | 419.37 KB |
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| Further on the races of the Masked Weaver Ploceus velatus Vieillot.pdf | 263.08 KB |
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| Subspeciation in Trachyphonus vaillantii Ranzan.pdf | 785.64 KB |
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| The characters and range of Pogoniulus chrysoconus extoni.pdf | 1.33 MB |
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| The characters and range of Uraeginthus angolensis natalensis Zedlitz 1911.pdf | 393.94 KB |
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| The Hartlaubii subspecies.pdf | 99.11 KB |