@book{572980,
  author     = {Jabben, Oltmann Tjardes},
  publisher  = {Breslau},
  title      = {Die friesische Sprache der Karrharde: Lautlehre},
  year       = {1931},
  hhtype     = {phonology},
  inlg       = {German [deu]},
  lgcode     = {Karrharde = Northern Frisian [frr]},
  macro_area = {Eurasia},
  src        = {hh}
}