MISTLY KHAERIYATUL HUDA NIM: 4104502112 WITH TITLE "INFLUENCE OF MOBILE PHONE TARIFF REDUCTION OF VOLUME SALES CENTER TO INDOSAT TEGAL" UNDER THE GUIDANCE ADVISOR E: DRS, Tabrani, MM AND ADVISOR II: TRI Sulistyani, SE, MM program MANAGEMENT STUDIES UNIVERSITY FACULTY OF ECONOMICS PANCASAKTI TEGAL 2009. The purpose of this study was to determine mobile phone tariffs on the volume of sales at…