A Study on Value Chain Analysis in Paddy Sector: Special Reference to Kilinochchi District, Srilanka. Global Journal of Management and Business Research, [S. l.], v. 12, n. 18, p. 13–22, 2012. Disponível em: https://journalofbusiness.org/index.php/GJMBR/article/view/820. Acesso em: 19 feb. 2026.