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Putri, Mayang (2021) Laporan Tugas Akhir Penerapan Protokol Kesehatan Covid-19 Department Food And Beverage Product Sheraton Mustika Yogyakarta Resort And Spa Periode 7 Desember 2020 - 19 Juni 2021. Diploma thesis, Sekolah Tinggi Pariwisata AMPTA Yogyakarta.