Knox, R. W. “Two-Star Fix — A Letter to the Editor from Rear Admiral Robert W. Knox, USC&Amp;GS (Ret) Formerly a Director of the International Hydrographic Bureau”. The International Hydrographic Review 53, no. 2 (July 8, 2015). Accessed May 6, 2024. https://journals.lib.unb.ca/index.php/ihr/article/view/23724.