African handbook of birds - Mackworth Praed, Cyril Winthrop‏ 1891-1974‏; Grant, Claude Henry Baxter 1878-1958‏ (London : Longmans, 1960)
Series I, volume 2. Birds of eastern and north eastern Africa
Keywords: AVES -- IDENTIFICACION -- AFRICA DEL ESTE -- MANUALES; AVES -- IDENTIFICACION -- AFRICA DEL NORESTE -- MANUALES