UUbi sumus?Ubi sumus?de John B. HattendorfMateriasHistoriographyNaval art and scienceNavigationNaval historyHistoryEdiciones (1)Ubi sumus? (1994)Naval War College Press · inglésMás obras de John B. HattendorfMahan on naval strategyTTalking about naval historyTalking about naval historyEvery man will do his duty