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Radio distancer system and its employment : submitted by the government of the Union of Soviet Socialist Republics
(1972-11)
When horizontal control for air survey is conducted "by means of RDS radio geodetic measurements are made concurrent with air survey0 In moments of photography tilt ranges "between airborne station antenna and ground ones ...
Report on cartographic work carried out in Madagascar (1 January 1966 to 31 December 1972)
(1972-11)
The papers presented to these two conferences are an indication of the importance which the Geographical Service attaches to this question. It was his concern that leads to the establishment in 1968 of an internal Geographical ...