Katzner, Kenneth
The languages of the world
Routledge, 1995
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Campbell, George L.
Concise compendium of the world's languages
Routledge, 1995
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Atlas of the world's languages
general editors, Christopher Moseley and R.E. Asher; section editors Mary Tait ... [and others]
Routledge, New York Routledge Reference 1994
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Atlas of the world's languages
general editors, Christopher Moseley, R.E. Asher
Routledge, 1994
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Pereltsvaig, Asya, 1972-
Languages of the world : an introduction
Cambridge University Press, 2012
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