Video Clase teórica 26-4-21 Tenacidad a la fractura
de Surace Pablo Esteban - https://drive.google.com/file/d/19SkzJ0bQy4cpbec9s2W0twhDSdisR6gN/view?usp=sharing
https://drive.google.com/file/d/19SkzJ0bQy4cpbec9s2W0twhDSdisR6gN/view?usp=sharing