@phdthesis{Braun2019,
  author      = {Tina Braun},
  title       = {Efficacy of outdoor environmental education : a cross-national comparative research study investigating nature connectedness, environmental attitudes, knowledge and behavior},
  type        = {doctoralthesis},
  pages       = {109},
  school      = {Universit{\"a}tsbibliothek Johann Christian Senckenberg},
  year        = {2019},
}