• 

  Key Figures

  https://web.archive.org/web/20090418171614/http://www.delhaizegroup.com/divclassdg_MenuText_RedTHEGROUPdiv/KeyFigures/tabid/85/D

  Keine Beschreibung vorhanden.

• 

  Key Figures

  https://web.archive.org/web/20090418171614/http://www.delhaizegroup.com/divclassdg_MenuText_RedTHEGROUPdiv/KeyFigures/tabid/85/Default.aspx

  Keine Beschreibung vorhanden.

• 

  Soddy cirkels

  http://www.pandd.demon.nl/soddy.htm#5

  Keine Beschreibung vorhanden.

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