PINKI. प्राकृतिक संसाधन: अर्थ और वर्गीकरण. Universal Research Reports, [S. l.], v. 5, n. 6, p. 114–117, 2018. Disponível em: https://urr.shodhsagar.com/index.php/j/article/view/847. Acesso em: 14 nov. 2024.