1
   
2
   
3
Published: München, Dt. Wirtschaftswiss. Inst. für Fremdenverkehr, Univ. München, 1970
   
4
Published: Innsbruck, Wagner, 1969
   
5
   
7
Published: Innsbruck, Wagner, 1968
   
9
Published: [Innsbruck], Wirtschafts- und Sozialwiss. Arbeitskreis, 1967
   
11
Published: Stuttgart [u.a.], Kohlhammer, 1960
   
12
Published: Innsbruck, Wagner in Komm., 1969
   
13
Published: Lübeck, Industrie- u. Handelskammer, 1976
   
16
   
17
   
19
   
20
Published: Trier, Europäisches Tourismus-Inst. an d. Univ., 1992
   

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