Comer's navigation simplified.

A manual of instruction in navigation as practised at sea. Adapted to the wants of the sailor. Containing all the tables, explanations, and illustrations necessary for the easy understanding and use of the practical branches of navigation and nautical astronomy; with numerous examples, worked out by the American Ephmeris and Nautical almanac, for several years ahead. Comp. at (and expressly for the navigation students of) Comer's Commercial College.

Edición de la obra Comer's navigation simplified