@misc{Keinath1978,
  author    = {Lisette Keinath},
  title     = {Courrier de pr{\´e}paration {\`a} la visite d'{\´e}tudiants de l'{\´e}cole sup{\´e}rieure de p{\´e}dagogie de Ludwigsburg},
  booktitle = {Mairie Montb{\´e}liard},
  institution = {Brief / Courrier},
  year        = {1978},
}