RAMIREZ GUERRERO, Luis Alonso; GUZMÁN ECHEVERRY, Cristian. El Heartland o Núcleo Vital de Colombia. DERROTERO, [S. l.], v. 17, n. 01, p. 1–10, 2024. DOI: 10.70554/Derrotero2023.v17n01.10. Disponível em: https://revistasescuelanaval.com/derrotero/article/view/24. Acesso em: 15 oct. 2025.