@book{63850,
  publisher  = {exper},
  title      = {Cours d'introduction au calcul pour adultes and volume 2},
  year       = {2006},
  country    = {Chad [TD]},
  lgcode     = {Buduma [bdm]},
  macro_area = {Africa},
  sil_id     = {48810},
  src        = {sil16},
  subject    = {Arithmetic [Zarth], Teacher's guides [Ztgd]}
}