Summary of Papers Presented Before the « Journees D’etude » of the French Institute of Navigation: Paris, 11 and 12 October 1956 PDF
Lunel General Comments Regarding Use of Radiolocation Systems and Ultrasonic Sounding in Hydrography PDF
H. C. Freiesleben Comparison between Two Decca Chains: Summary of a paper presented at a meeting of the Ausschuss fiir Funkortung at Essen on 28 February 1956 PDF
