1
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Burlington,
Elsevier Science,
1982
2
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Milton, Qld,
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3
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Boston,
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4
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5
Published:
[Erscheinungsort nicht ermittelbar],
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6
Published:
Hamburg,
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7
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New York,
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8
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[S.l.],
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2005
9
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10
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12
13
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San Francisco, Calif.,
Jossey-Bass,
2001
14
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Heidelberg,
Haefner,
1992
15
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Customer service : a practical approach
Sixth edition, Pearson new international edition
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Harlow, Essex,
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17
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Boston, Mass. [u.a.],
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2009
20
Published:
Dordrecht,
Springer Science+Business Media B.V,
2011