@phdthesis{BeckerLamers2007,
  author      = {Cornelie Becker-Lamers},
  title       = {Die nationalen Umweltzeichen. Zur Entstehung einer globalen Tradition},
  type        = {doctoralthesis},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.942},
  url       = {http://vg04.met.vgwort.de/na/8894837640a87c76d2f3312361f966},
  year        = {2007},
}