CHANDRA DATTA, S. NGO Act as Potential-Policy-Developer Social-Vaccine-COVID-19 Epidemic-Model until Discovery-of-Medical-Vaccine: Achieved Green-Socio-Economic Welfare Science Technology Innovations. Archives of Community Medicine and Public Health, [S. l.], v. 6, n. 2, p. 225–232, 2020. DOI: 10.17352/2455-5479.000111. Disponível em: https://www.healthdisgroup.com/acmph/article/view/ACMPH-6-211. Acesso em: 28 sep. 2025.