Summaries of the Selected Articles. The Pakistan Development Review, [S. l.], v. 2, n. 4, p. pp.626–640, 1961. DOI: 10.30541/v2i4pp.626-640. Disponível em: https://thepdr.pk/index.php/pdr/article/view/57. Acesso em: 28 oct. 2025.