On the anniversary of her birth, we publish the birth certificate of Margherita Beloch Piazzolla (1879-1976), mathematician and professor at the University of Ferrara from 1927 to 1955 on the page From the register to History. He was responsible for devising new instruments for photogrammetry in the medical field, advancing and perfecting the possibility of observing the internal organs of the human body through x-ray images.