UNIDO, Industrial Processing of Natural Resources. New York: United Nations. 1981. viii + 78pp.US $ 5.00. [United Nations Publication Sales No. E. 81. 11 . B.1]. The Pakistan Development Review, [S. l.], v. 21, n. 4, p. pp.329–333, 2022. DOI: 10.30541/v21i4pp.329-333. Disponível em: https://thepdr.pk/index.php/pdr/article/view/606. Acesso em: 9 jun. 2025.