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1
Objective IELTS : Advanced : Student's book / Michael Black, Annette Capel
Cambridge : Cambridge University Press, 2006
144 p. : col. ill. ; 28 cm.+ 1 CD-ROM (4 3/4 in.).
2
Objective IELTS Self-study student s book : advanced / Michael Black, Annette Capel.
Cambridge [etc.] : Cambridge University Press, 2007.
80 p. ; 30 cm.