Robles, Mary Ann P. Frontliners' service quality in the Bureau of Internal Revenue-Cordillera / Mary Ann P. Robles. - Divine Word College of Vigan : [s.n.], 2019. - xv, 73 pages : illustration ; 28 centimeter. References: pages 63-65. Subjects--Topical Terms: Performance standard. Dewey Class. No.: TH 658.5 R57f 2019