@article{Groenke1991,
  author    = {Gr{\"o}nke, Ottokar},
  title     = {Gesetzm{\"a}ßigkeiten in der Biologiedidaktik?},
  isbn      = {3-8142-0418-2},
  year      = {1991},
  language  = {de}
}
@article{Groenke1993,
  author    = {Gr{\"o}nke, Ottokar},
  title     = {Pflanzenfamilien},
  isbn      = {3-06-010518-9},
  year      = {1993},
  language  = {de}
}
@article{Groenke1993,
  author    = {Gr{\"o}nke, Ottokar},
  title     = {Vorwort, Einleitung},
  isbn      = {3-06-012152-4},
  year      = {1993},
  language  = {de}
}
@article{Groenke1993,
  author    = {Gr{\"o}nke, Ottokar},
  title     = {Pflanzenfamilien},
  isbn      = {3-06-010519-7},
  year      = {1993},
  language  = {de}
}
@article{Groenke1993,
  author    = {Gr{\"o}nke, Ottokar},
  title     = {Samenpflanzen},
  isbn      = {3-06-010519-7},
  year      = {1993},
  language  = {de}
}
@article{Groenke1993,
  author    = {Gr{\"o}nke, Ottokar},
  title     = {Pflanzenfamilien},
  isbn      = {3-06-012152-4},
  year      = {1993},
  language  = {de}
}
@article{Groenke1993,
  author    = {Gr{\"o}nke, Ottokar},
  title     = {Samenpflanzen},
  isbn      = {3-06-012152-4},
  year      = {1993},
  language  = {de}
}
@article{Groenke1993,
  author    = {Gr{\"o}nke, Ottokar},
  title     = {Samenpflanzen},
  isbn      = {3-06-010518-9},
  year      = {1993},
  language  = {de}
}
@article{Groenke1995,
  author    = {Gr{\"o}nke, Ottokar},
  title     = {Bericht {\"u}ber die Arbeitsgruppe "Qualifiziert Formenkunde f{\"u}r den Alltag?"},
  isbn      = {3-89088-095-9},
  year      = {1995},
  language  = {de}
}
@book{BergstedtGroenkeMeincke1996,
  author    = {Bergstedt, Christel and Gr{\"o}nke, Ottokar and Meincke, Irmtraut},
  title     = {Biologie : Lehrbuch f{\"u}r Sekundarstufe II ; Gymnasium, Gesamtschule ; Lehrerband mit Kopiervorlagen},
  publisher = {Volk u. Wissen},
  address   = {Berlin},
  isbn      = {3-06-012155-9},
  pages     = {160 S.},
  year      = {1996},
  language  = {de}
}