Quelea quelea : Africa`s bird pest - Richard L. Bruggers; Clive C.H. Elliott (Oxford Oxford University Press, 1989)
Richard L. Bruggers & Clive C.H. Elliott: Quelea quelea : Africa`s bird pest. Oxford. Oxford University Press, 1989. 0-19-857607-2--(632.68BRU)
ENGLISH