@misc{Frahm2013,
  author    = {Jan-Peter Frahm},
  title     = {Die Moosflora ausgew{\"a}hlter Naturr{\"a}ume: Der Mittelrhein},
  booktitle = {155},
  series    = {Archive for Bryology},
  number    = {155},
  type      = {periodicalpart},
  pages     = {7},
  year        = {2013},
}