Population Change, Modernization and Welfare. By Joseph Spengler. Prentice-Hall Inc., Englewood Cliffs, N.J. 1974. The Pakistan Development Review, [S. l.], v. 16, n. 2, p. pp.220–222, 1977. DOI: 10.30541/v16i2pp.220-222. Disponível em: https://thepdr.pk/index.php/pdr/article/view/452. Acesso em: 28 oct. 2025.