Julivert M. New observations on the Quaternary stratigraphy and tectonics around Bucaramanga. Bol. Geol. [Internet]. 1963 Dec. 10 [cited 2024 May 17];(15):41-59. Available from: https://revistas.uis.edu.co/index.php/revistaboletindegeologia/article/view/5771