

Lawson, John and E. Neal Claussen and Karl L. Wallace and David Potter


Malchenko, M. and V. Pochayev and V. Stukalov


Olson, E. W. and Peter Peterson and J. G. Dahlberg


Hoyos De Martens, Veronica And M. L. Nydia Palma De Villarreal






Allen, Charles W. and Richard E. Jensen









National Research Council and Committee On Advances In Navigation and Piloting



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