D. T. Pugh, G. A. Alcock Gradients on the Mean and Instantaneous Sea Surface Level in a Shallow Water Region PDF (English)
G. E. Murt, J. M. Adams U.K. Hydrographic Department Experience in the use of Digitisers PDF (English)
R. S. Bryant, C. Doekes, R. L.K. Tripe INDAPS, Integrated Navigation, Data Acquisition and Processing System PDF (English)
R. W. Knox Two-Star Fix — A Letter to the Editor from Rear Admiral Robert W. Knox, USC&GS (Ret) formerly a Director of the International Hydrographic Bureau PDF (English)
