John W Calvert
Navigation, V2, No. 10, June, 1951: Journal of the Institute of Navigation
Contributing Authors Include Paul Rosenberg, Charles H. Smiley, Robert H. Randall, Jr., Randolph E. Tyrrel, P. V. H. Weems, Eric J. Isbister, John W. Busby, Ralph F. Clark, W. F. Griswold, George W. Petrie, Roy W. M. Graham, C. W. Davis, A. N. Black, And F. Y. Craig....
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