Ballmer, Thomas T.
John Benjamins Publishing, 1982
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Anderson, John, author
Amsterdam John Benjamins B.V. 1982
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Hartmann, Reinhard R.K., author
Tubingen [Gunter Narr verlag] 1973
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Fabb, Nigel, author
Camridge University Press , 2002
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Cambridge University Press, 2004
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