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2000
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2000
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Bernd Stauss,Kai Engelmann,Anja Kremer,Achim Luhn
| Springer |
2008
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Buhalis, Dimitrios.
| Financial Times Prentice Hall |
2003
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Charles R. Goeldner,J.R. Brent Ritchie
| John Wiley & Sons |
2006
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Charles R. Goeldner,J.R. Brent Ritchie
| John Wiley & Sons |
2006
7
Crotts, John C.
| Haworth Hospitality Press |
2000
10
Geoffrey i. Crouch,Richard R. Perdue,Harry J.P. T
| CABI Publishing |
2004