Rivera Quintanilla JE. Competitiveness model of agro-industrial and crafts export, for the establishment and development of strategies of productive chains, in the eastern zone of El Salvador. revunivo [Internet]. 2021 Apr. 21 [cited 2026 Apr. 7];1(10):13-2. Available from: https://www.camjol.info/index.php/revunivo/article/view/11367