De Silva, K. Nihal වාසි ගෙනෙන කොටස් වෙළඳපොළ = wasi genena kotas welandapola - Author, 2012. - xi,80,xiiip.; 20cm ISBN: 978-955-52944-1-6 Subjects--Topical Terms: Economics Dewey Class. No.: 332.114 / DES