MOSTAFA, D. M. Concentration and size distribution of biological particles in school classrooms. JOURNAL OF ADVANCES IN PHYSICS, [S. l.], v. 13, n. 8, p. 5085–5091, 2017. DOI: 10.24297/jap.v13i8.6339. Disponível em: https://rajpub.com/index.php/jap/article/view/6339. Acesso em: 22 dec. 2024.