R=5
VK Sumner, Thomas Hubbard, 1807-
569 A new and accurate method of
-S94 finding a ship's position at sea, : 1845 by projection on Mercator's chart ...
The principles of the method being fully explained and illustrated by problems, examples, and plates, with rules for practice, and examples from actual observation / By Capt. Thomas
H. Sumner. -- Second edition. -- Boston: : Published by Thomas Groom & CO..., 1845. (S.N. Dickinson & Co.,
printers) 88 p, [6] leaves of plates : maps
(Continued next card) MRGRRBK ocm03280156
= 5 005077