Estados mafiosos y crimen en la frontera

by Ávila, Ariel
Published 2016-04-12T22:31:57Z

La frontera norte: ¿espacio en disputa?

by Jarrín, Oswaldo (Expositor), Carrión Mena, Fernando (Expositor), Ávila, Ariel (Expositor)
Published 2018-07-11T02:25:59Z

Vanadium carbide coatings produced on gray cast iron using the thermo-reactive deposition/diffusion technique

by Amaya Avila,Ariel Augusto, Piamba Tulcan,Oscar Edwin, Olaya Florez,Jhon Jairo
Published 2015