@article{Beetz1998,
  author    = {Beetz, Petra},
  title     = {Absolutismus in Deutschland},
  year      = {1998},
  language  = {de}
}
@article{Beetz1998,
  author    = {Beetz, Petra},
  title     = {Die fr{\"u}hen Hochkulturen - Altes {\"A}gypten und Mesopotamien},
  year      = {1998},
  language  = {de}
}
@article{Beetz1998,
  author    = {Beetz, Petra},
  title     = {Die fr{\"u}hen Hochkulturen - Altes {\"A}gypten und Mesopotamien},
  year      = {1998},
  language  = {de}
}
@article{Beetz1993,
  author    = {Beetz, Petra},
  title     = {Pro und Contra : moderne Medien und Aneignung von Geschichte},
  year      = {1993},
  language  = {de}
}
@book{BeetzClaussFiedler1997,
  author    = {Beetz, Petra and Clauss, Manfred and Fiedler, Almut},
  title     = {Expedition Geschichte : Mittelschule Sachsen ; Klasse 5 ; Bd. 1 Von der Urzeit bis zu den fr{\"u}hen Hochkulturen [Hauptband]},
  editor    = {Osburg, Florian and Klose, Dagmar and Barcel{\´o}, Pedro},
  publisher = {Diesterweg},
  address   = {Frankfurt am Main},
  isbn      = {3-425-03325-5},
  pages     = {75 S.},
  year      = {1997},
  language  = {de}
}
@book{BarceloBeetz1998,
  author    = {Barcel{\´o}, Pedro and Beetz, Petra},
  title     = {Expedition Geschichte : Regelschule Th{\"u}ringen ; Klasse 5 ; Bd. 1 Von der Urzeit bis zur Zeit der Griechen [Hauptband]},
  volume    = {1, Hauptbd. = 5. Kl},
  editor    = {Klose, Dagmar and Barcel{\´o}, Pedro},
  publisher = {Diesterweg},
  address   = {Frankfurt am Main},
  isbn      = {3-425-03401-4},
  pages     = {106 S.},
  year      = {1998},
  language  = {de}
}
@book{BarceloBeetzClauss1997,
  author    = {Barcel{\´o}, Pedro and Beetz, Petra and Clauss, Manfred},
  title     = {Expedition Geschichte : F{\"o}rderstufe Sachsen-Anhalt ; Klassen 5/6 ; Bd. 1 Von der Urzeit bis zum Ende des Mittelalters [Hauptband]},
  volume    = {1 = Kl. 5 und 6},
  editor    = {Klose, Dagmar and Barcel{\´o}, Pedro},
  publisher = {Diesterweg},
  address   = {Frankfurt am Main},
  isbn      = {3-425-03385-9},
  pages     = {244 S.},
  year      = {1997},
  language  = {de}
}
@book{BeetzHallek2001,
  author    = {Beetz, Petra and Hallek, Dieter},
  title     = {Expedition Geschichte : Realschule Baden-W{\"u}rtemberg ; Klasse 8 ; Bd. 2. Von der Reformation bis zum Beginn des 20. Jahrhunderts},
  volume    = {2 = 8. Kl},
  editor    = {Reese, Armin and Uffelmann, Uwe and Klose, Dagmar and Osburg, Florian},
  publisher = {Diesterweg},
  address   = {Frankfurt am Main},
  isbn      = {3-425-10538-8},
  pages     = {244 S.},
  year      = {2001},
  language  = {de}
}
@article{Beetz2001,
  author    = {Beetz, Petra},
  title     = {Fr{\"u}he Hochkulturen},
  year      = {2001},
  language  = {de}
}
@article{Beetz2001,
  author    = {Beetz, Petra},
  title     = {Fr{\"u}he Hochkulturen},
  year      = {2001},
  language  = {de}
}