Methuen & Co. ; Langenscheidt Kg., 1962
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Methuen & Co. ; Langenscheidt Kg., 1963
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Wahrig, Gerhard, author
Bertelsmann Lexikon-Verlag Reinhard Mohn, 1970
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Kluge, Friedrich, 1856-1926, author
Walter De Gruyter, 1963
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Gayed, Riad, author
Elia's Modern Press, [date of publication not identified]
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