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38.		AVISO Nº 128/2004
39.		DECRETO Nº 9/2004
40.		AVISO, DE 22 DE MAIO DE 1970
41.		AVISO, DE 7 DE SETEMBRO DE 1968
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43.		Tourism resources in Eastern Europe: Poland, Hungary, Czecholovakia, Yugoslavia and Bulgaria / Commission of European Communities. Tourism Unit DG XXIII Data Publicação: 199? Col.autor: Comunidade Europeia. DG XXIII COTA(S): 93
44.		Turismo no mundo: cidades marca COTA(S): RP-1789
45.		Tourism resources in Eastern Europe: final report and recommendations / Commission of European Communities. DG XXIII; PA Cambridge Economic Consultants Data Publicação: 1991 Col.autor: Comunidade Europeia. DG XXIII COTA(S): 94-CEE
46.		Tourism congestion management at natural and cultural sites / World Tourism Organization Data Publicação: 2004 Col.autor: OMT COTA(S): 12479; 12479-Dg
47.		Tourism - common cause. polish tourist products / Iwona M. Batyk, Stefan S. Smoczynski Autor: Batyk, Iwona M. Coautor: ; Smoczynski, Stefan S. COTA(S): RE-1193
48.		Employment experiences of Polish migrant workers in the UK hospitality sector / Hania Janta [et al.] Resp- Sec.: Janta, Hania Ladkin, Adele Brown, Lorraine Lugosi, Peter COTA(S): RE-1193