Note: This calendar view maps the number of captures of https://planipolis.iiep.unesco.org/en/2012/plan-nacional-de-educacion-obligatoria-y-formacion-docente-%E2%80%93-resoluci%C3%B3n-cfe-n%C2%BA-18812-%E2%80%93-5-de, not how many times the site was actually updated.
Look Up URL in general Internet Archive web collection.