Numerical Models of Economic Development by A. Qayum. Rotterdam University Press, 1966. The Pakistan Development Review, [S. l.], v. 9, n. 4, p. pp.449–450, 1969. DOI: 10.30541/v9i4pp.449-450. Disponível em: https://thepdr.pk/index.php/pdr/article/view/263. Acesso em: 27 oct. 2025.