Dòng Nội dung
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English for international tourism : course book / Elinor Ridler.
Harlow, England : Longman, 1997.
94 p. ; 30 cm.



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Words at work : Vocabulary development for business English / David Horner, Peter Strutt
Cambridge : Cambridge University Press, 1999
vi, 138 p. : ill., facsims., forms, ports ; 25 cm.