MUKHERJEE, P.K. 1. W5H of Science 2. W5H of Technology Author Rakesh Mohan Hallen Publisher Vigyan Prasar. SCHOOL SCIENCE, [S. l.], v. 49, n. 1, p. p.81–82, 2011. Disponível em: http://ejournals.ncert.gov.in/index.php/SS/article/view/911. Acesso em: 19 aug. 2025.