@book{80900,
  address    = {Riberalta},
  pages      = {91},
  publisher  = {Instituto Lingüístico de Verano},
  title      = {Cálculo and libro 4},
  year       = {1976},
  country    = {Bolivia [BO]},
  inlg       = {English [eng]},
  lgcode     = {Spanish [spa]},
  macro_area = {Eurasia},
  sil_id     = {16936},
  src        = {sil16},
  subject    = {Arithmetic [Zarth]}
}