1050-1500 1872-1930 1887-1963 1890-1978 1901-1971 1915- 1915-1984 active12thcentury aircraftindustry bibliography biography blohm eichrodt generals gerhardvon germanliterature germany hamburg history hubatsch industrialists inprocess middlehighgerman military militarypolicy minnesingers pt1671 rad reinhardt shipbuilding theology