Pushpawelage, Sampath අ.පො.ස (උ.පෙළ) ව්යාපාර අධ්යනය : 1 පත්රය = a.po.sa (usas pela) viyaapaara aDHyanaya : 1 pathraya - Colombo: Samudra Book Publishers, 2015. - ii,222p.; 29cm ISBN: 978-955-680-405-8 Subjects--Topical Terms: EducationPast PepersBusiness Studies Dewey Class. No.: 380.7 / PUS