@book{43613,
  address    = {Quito},
  publisher  = {Instituto Lingüístico de Verano},
  title      = {Tareas 1-4},
  year       = {1967-68},
  country    = {Ecuador [EC]},
  lgcode     = {Spanish [spa]},
  macro_area = {Eurasia},
  sil_id     = {13278},
  src        = {sil16},
  subject    = {Workbooks [Zwkb]}
}