Laconsay, Tirso D. Performance and competence of social studies Teachers in the Diocesan Schools of La Union / Tirso D. Laconsay. - City of San Fernando, La Union : [s.n.], 2017. - xv, 149 pages : illustration ; 28 centimeter. Bibliography: pages 121-127. Subjects--Topical Terms: Teachers. Dewey Class. No.: TH 371.1 L12p 2017