@book{BuetowHerzigJahnetal.2000,
  author    = {Heike B{\"u}tow and Reinhard Herzig and Gert Jahn and Wolfgang Markert and J{\"u}rgen Meißgeier and Martin B{\"u}tow},
  title     = {Seydlitz Erdkunde 4 : Lehrerhandreichungen},
  year      = {2000},
}