Note by the institut geographique national on the use of APR (Air Profile Recorder) flights above the equatorial forest
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1963-06Author(s)/Corporate Author (s)
United Nations. Economic and Social Council;United Nations. Economic Commission for Africa;
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For five years the Institute geographique National (IGN) has systematically applied the APR in compiling regular small-scale maps of desert, more or less flat regions. It is known that the procedure permits direct determination of the overall vertical control necessary for plotting.
Citation
“United Nations. Economic and Social Council; United Nations. Economic Commission for Africa (1963-06). Note by the institut geographique national on the use of APR (Air Profile Recorder) flights above the equatorial forest. UN. ECA Regional Cartographic Conference for Africa (1963 July 1-13: Nairobi , Kenya). Addis Ababa :. © UN. ECA,. https://hdl.handle.net/10855/13113”Conférence
UN. ECA Regional Cartographic Conference for Africa (1963 July 1-13: Nairobi , Kenya)Collections
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