Modern navigation by Summer-St. Hilaire methods: the first published work devoted exclusively to the elucidation of this subject, now so generally used in the U.S. Navy
Modern Navigation by Sumner-St. Hilaire Methods: The First Published Works Devoted Exclusively to the Elucidation of This Subject, Now So Generally Used in the U.S. Navy
Navigation: A Short Course, Explaining the Principal Problems Met with in Ordinary, Everyday Work at Sea