TRAVIS, A. S. First Steps: Synthetic Ammonia in the United States. Substantia, [S. l.], v. 5, n. 2, p. 55–77, 2021. DOI: 10.36253/Substantia-1181. Disponível em: https://riviste.fupress.net/index.php/subs/article/view/1181. Acesso em: 25 apr. 2024.