. . "R." . "Ruth Wolf-" . "Ruth Sibille" . "Ruth Sibille Wolf" . "S." . "RUTH" . . "Ruth Sibille Wolf" . "Zimmerman-Wolf" . "Ruth Wolf- Zimmerman" . . . "Ruth Wolf-Zimmerman" . "1995" . "Ruth Wolf"@en . . "Ruth S." . "RUTH WOLF" . "Wolf-Zimmerman" . "R.S." . "Ruth Foppema-Wolf" . "R.S. Zimmerman-Wolf" . . "Ruth"@en . "Ruth Zimmerman" . "Ruth S. Wolf" . "1918" . "R.S" . "R.S Zimmerman-Wolf" . "Wolf, Ruth (Ruth Sibille)" . "Sibille" . "Ruth S. Wolf" . . "Zimmerman" . "R. Wolf" . "Foppema-Wolf" . "Wolf"@en . "WOLF" . .