PARASHAR, Renu; PARASHAR, R. K. The Simple Classroom Method to Demonstrate the Law of Conservation of Mass. SCHOOL SCIENCE, [S. l.], v. 56, n. 4, p. p.26–28, 2018. Disponível em: http://ejournals.ncert.gov.in/index.php/SS/article/view/2646. Acesso em: 18 aug. 2025.