P. de Vanssay de Blavous Calculation of the Geographical Coordinates on the International Ellipsoid of Reference PDF
G. Romagna-Manoia Report on the Scientific Researches carried out by H. I. M. S. "Citta di Milano" at Spitzbergen during the Arctic Expedition of 1928 PDF
M. H. Roussilhe Note on the Solution of the POTHENOT Problem in Space: Application to the Restitution of aerial Photographs PDF
International Radiotelegraph Convention and General and Supplementary Regulations signed at Washington, 25th November, 1927 PDF
