@book{Merchel1987,
  author    = {Joachim Merchel},
  title     = {Kleinsteinrichtungen in der Heimerziehung},
  edition   = {1. Aufl.},
  series    = {Internationale Gesellschaft f{\"u}r Heimerziehung},
  isbn      = {3-925146-20-2},
  year      = {1987},
}