@book{MeierKloseOstermeieretal.1999,
  author    = {Meier, Bernd and Klose, Veronika and Ostermeier, Lydia and Mette, Dieter},
  title     = {Arbeitslehre aktuell : Ausgabe Bayern ; Klasse 9},
  publisher = {Oldenbourg},
  address   = {M{\"u}nchen},
  pages     = {112 S.},
  year      = {1999},
  language  = {de}
}
@book{MetteKloseMeieretal.1999,
  author    = {Mette, Dieter and Klose, Veronika and Meier, Bernd and Ostermeier, Lydia},
  title     = {Arbeitslehre aktuell : Klasse 9, Ausgabe B, Lehrerband},
  publisher = {Oldenburg Schulbuchverl.},
  address   = {M{\"u}nchen},
  isbn      = {3-486-88457-3},
  pages     = {112 S.},
  year      = {1999},
  language  = {de}
}
@book{MetteKloseMeieretal.1999,
  author    = {Mette, Dieter and Klose, Veronika and Meier, Bernd and Ostermeier, Lydia},
  title     = {Arbeitslehre aktuell : Klasse 9, Ausgabe B, Sch{\"u}lerbuch},
  publisher = {Oldenbourg Schulbuchverl.},
  address   = {M{\"u}nchen},
  isbn      = {3-486-88557-X},
  pages     = {112},
  year      = {1999},
  language  = {de}
}
@book{MetteKloseOstermeieretal.1999,
  author    = {Mette, Dieter and Klose, Veronika and Ostermeier, Lydia and Meier, Bernd},
  title     = {Arbeitslehre aktuell : Ausgabe B ; Klasse 9 ; Lehrerband},
  publisher = {Oldenbourg},
  address   = {M{\"u}nchen},
  pages     = {20 S.},
  year      = {1999},
  language  = {de}
}
@book{MetteKoseOstermeieretal.1999,
  author    = {Mette, Dieter and Kose, Veronika and Ostermeier, Lydia and Meier, Bernd},
  title     = {Arbeitslehre aktuell : Ausgabe B ; Klasse 9},
  publisher = {Oldenbourg},
  address   = {M{\"u}nchen},
  year      = {1999},
  language  = {de}
}