A Note on the Use-Classification of Four Digit Industries or How to Call a Spade a Spade. The Pakistan Development Review, [S. l.], v. 6, n. 4, p. pp.592–597, 2022. DOI: 10.30541/v6i4pp.592-597. Disponível em: https://thepdr.pk/index.php/pdr/article/view/163. Acesso em: 8 jun. 2025.