AAVV, AAVV. “Le Celebrazioni Del 75° Anniversario dell’Istituto Geografico Militare Italiano”. Annals of Geophysics 1, no. 1 (November 25, 1948): 126–127. Accessed May 23, 2022. https://www.annalsofgeophysics.eu/index.php/annals/article/view/6003.