Wickramanayaka, D.G.A.M.; Henegedara, G. M.
(Department of Social Statisctics, University of Kelaniya, Sri Lanka, 2020)
Gem industry, which is highly developed through the advancement of technology, has increased Sri Lanka's foreign exchange. By 2017, Sri Lanka has received a total of 22,075 million Rupees. This is a very high contribution ...