1.
Conservation of the historical document “Pacto de Concordia” (Costa Rica): Assessment with a deterioration scale and physicochemical techniques. UNED Res. J. [Internet]. 2025 Sep. 22 [cited 2026 Jul. 30];17(1):e5878. Available from: https://revistas.uned.ac.cr/index.php/cuadernos/article/view/5878