Sumner, Thomas Hubbard
Sumner, Thomas H.
VIAF ID: 11347460 (Personal)
ISNI-test: 0000 0000 2613 0883
|Line of position navigation, c2003:|
|A new and accurate method ... [MI] 1851|
|New and accurate method of finding a ship's position at sea, 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|