| Table of contents Bol. cienc. tierra no.49 Medellín Jan./June 2021 Articles | | | | · Gravimetric analysis and calculation of the strength of a liquid in the La Malinche volcano, Puebla-Tlaxcala, Mexico Ramos-Aguilar, Rogelio; Máximo-Romero, Patricia; Galindo-López, Víctor; Ávila-Cruz, Máximo; Yáñez-Pérez, Gabriela; Márquez-Máximo, Rubén; Hernández-Andrade, Daniel; Covarrubias-Salvatori, Victoriano
| | | | · Main geological processes and phenomena causing risk at Santiago de Cuba province, Cuba Galbán-Rodríguez, Liber; Guardado-Lacaba, Rafael Miguel; Chuy-Rodríguez, Tomas Jacinto
| | | | · Opportunities for the formulation of a sustainable business model for small-scale informal gold mining Velilla-Avilez, Danilo Arturo; Restrepo-Baena, Oscar Jaime
| | | | · Theoretical methodological aspects about earthquake prediction Galbán-Rodriguez, Liber
| | |
|