· ABACUS Hotel System21 1. ABACUS Hotel Systemgl S21 CRS(Computerized Reservation System)S E6H...
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· ABACUS Hotel System21 1. ABACUS Hotel Systemgl S21 CRS(Computerized Reservation System)S E6H —t 01, ABACUS 1993 Hotel Availability o ICE Hotel Chain System2È¥Ei Confirmation