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1
Cambridge first certificate handbook Helen Naylor, Stuart Hagger.
2 cassettes.
Cambridge : Cambridge University Press, ; 1999.
2
Essential grammar in use : supplementary exercises with answers / Helen Naylor, Raymond Murphy
Cambridge : Cambridge University Press, 1996
106 p. : ill. ; 24 cm.
3
Two lives / Helen Naylor ; illustrations by Jason Walker.
Cambridge ; Cambridge University Press, 2001
64 p.: ill., maps ; 20 cm.