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Tourism : the international business
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Industri pariwisata Qatar, GDP, GNP, Qatar tourism authority = Tourism industry, Qatar, GDP, GNP, Qatar tourism authority
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 UI - Skripsi Open
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Pemasaran pariwisata = Tourism marketing
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 Buku Teks
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Chalenges to develop small islands tourism in Indonesia
The Ary Suta Center, 2019
 Artikel Jurnal
Sri Bramantoro Abdinagoro
Challenges to develop small islands tourism in Indonesia
The Ary Suta Center, 2019
 Artikel Jurnal