Dauzat, Albert, 1877-1955, author
Librairie Larousse, 1964
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Partridge, Eric, 1894-1979, author
Routledge, 1991
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Merriam-Webster, 1989
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Rees, Nigel, author
Cassell Publishers, 1995
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Vries, Jan de, author
Het Spectrum, 1971
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