ROMERO, Raymundo V. Application of Geographic Information System (GIS) for Hypsometric Analysis of a Bicol River Basin Area. Engineering And Technology Journal, [S. l.], v. 9, n. 8, p. 4787–4794, 2024. DOI: 10.47191/etj/v9i08.25. Disponível em: https://everant.org/index.php/etj/article/view/1452. Acesso em: 21 nov. 2024.