@incollection{HarthPeterFuchs1992,
  author    = {Harth-Peter, Waltraud and Fuchs, Birgitta},
  title     = {Vorwort (Alternativen fr{\"u}hkindlicher Erziehung : Von Rousseau bis Montessori)},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-43228},
  publisher      = {Universit{\"a}t W{\"u}rzburg},
  year      = {1992},
  abstract  = {No abstract available},
  subject      = {Kleinkinderziehung},
  language  = {de}
}
@techreport{HarthPeterFuchs1988,
  author    = {Harth-Peter, Waltraud and Fuchs, Birgitta},
  title     = {A.M.I. International Study Conference: Washington D. C., 31. Juli bis 3. August 1988},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-42792},
  year      = {1988},
  abstract  = {No abstract available},
  language  = {de}
}
@incollection{HarthPeterFuchs1989,
  author    = {Harth-Peter, Waltraud and Fuchs, Birgitta},
  title     = {Vorwort (Montessori-P{\"a}dagogik und die Erziehungsprobleme der Gegenwart)},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-43099},
  publisher      = {Universit{\"a}t W{\"u}rzburg},
  year      = {1989},
  abstract  = {No abstract available},
  language  = {de}
}