- ISBN: 0273625713
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- 1998
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- ISBN: 0273644351
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- 1998
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- Pearson Education
- 2002
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- ISBN: 0582473438
- Longman
- 2003
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- ISBN: 9781405812313
- Pearson Longman
- 2007
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- ISBN: 9781405899116
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- 2009
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- Longman
- 2011
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- ISBN: 9781447923619
- Pearson
- 2013
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