"Civilization." . . "Landeskunde." . . . . . . . . . . . . . . . . . . "Southern Regions of the United States" . . . . . . . . . . "Southern regions of the United States, by Howarp W. Odum, for the Southern regional committee of the Social science research council" . . . . . . . . . . . . . "Southern regions of the United States"@en . "Southern regions of the United States" . . . . . . . . "Etats-Unis - sud." . . "Southern States" . . "Southern States." . "Estados Unidos" . . "Social conditions." . . "Social Science Research Council" . . . . "EE.UU" . . "EE. UU." . "1900 - 1999" . . "USA" . . "Southern Regional Commitee of the Social Science Council." . . "Regionalismo EE.UU Estados del Sur." . . "Regionalismo EE. UU. Estados del Sur." . "Regionalismo EE.UU. Estados del Sur." .