@article{OPUS4-20644,
  title     = {Bausteine Sachunterricht; 4. Schuljahr; Ausgabe Berlin/Brandenburg},
  publisher = {Diesterweg},
  address   = {Frankfurt am Main [u.a.]},
  pages     = {S. 8 - 9 ; S. 30 - 31 ; S. 52 - 53 ; S. 82 - 83},
  year      = {1999},
  language  = {de}
}