BAUTISTA PÉREZ, Fabio. Evaluation of programs on drug use prevention in students from 6th to 9th grade schools in San Salvador. Ciencia, Cultura y Sociedad, [S. l.], v. 5, n. 2, p. 37–46, 2020. DOI: 10.5377/ccs.v5i2.10212. Disponível em: https://www.camjol.info/index.php/CCS/article/view/10212. Acesso em: 6 dec. 2025.