Los efectos del covid-19 en el comercio exterior Boliviano durante los años 2019-2021. UTEPSA INVESTIGA, [S. l.], v. 6, n. 1, p. 55–72, 2022. DOI: 10.62333/1gvrss52. Disponível em: https://investiga.utepsa.edu/index.php/revista/article/view/74.. Acesso em: 4 apr. 2025.