@misc{18693,
  pages      = {58},
  title      = {Matemática 2: Segundo libro},
  year       = {1974},
  country    = {Colombia [CO]},
  lgcode     = {Spanish [spa]},
  macro_area = {Eurasia},
  sil_id     = {23520},
  src        = {sil16},
  subject    = {Arithmetic [Zarth]}
}