1939-1945 20thcentury aboriginalaustralian aboriginalaustralians aboriginalhealth armedforces arnhemland australia australian bürgerrecht cryptography dreamtime(aboriginalaustralianmythology) education food governmentrelations healthandhygiene history humanecology indian indians missions mythology naturalhistory navajocodetalkers northernterritory participation personalnarratives racerelations religion socialconditions sociallifeandcustoms warfare worldwar