Quality control of the plant drug Calendula officinalis L. available in the city of Ponta Grossa (PR): Vigil Sanit Debate, Rio de Janeiro, 2024, v.12: e02245 | Published on: 15/10/2024. Health Surveillance under Debate: Society, Science & Technology , "Rio de Janeiro, Brasil", v. 12, p. 1–8, 2024. DOI: 10.22239/2317-269X.02245. Disponível em: https://visaemdebate.incqs.fiocruz.br/index.php/visaemdebate/article/view/2245. Acesso em: 16 oct. 2024.