@book{BoettcherMingenbachMuelleretal.2001,
  author    = {Kirsten B{\"o}ttcher and Hans-Michael Mingenbach and Helmut M{\"u}ller and Rainer Starke and Winfried Waldeck and Klaus Wehrs and Reinhard Herzig},
  title     = {Seydlitz Geographie 1 : Kl. 7/8, Sch{\"u}lerband, Niedersachsen},
  isbn      = {3-507-52608-5},
  year      = {2001},
}