Navigation then and now;
a reading course for the amateur or prospective navigator,
by George L. Hosmer.

APA Citation

Hosmer, G. L. (George Leonard)., Burton, A. Edgar., American Library Association., American Merchant Marine Library Association. (1928). Navigation then and now: a reading course for the amateur or prospective navigator. Chicago: Published for the American merchant marine library association by the American library association.

MLA Citation

Hosmer, George L. (George Leonard), 1874-1935, Alfred Edgar Burton, American Library Association, and American Merchant Marine Library Association. Navigation Then And Now: a Reading Course for the Amateur Or Prospective Navigator. Chicago: Published for the American merchant marine library association by the American library association, 1928.