@incollection{139984,
  author     = {Unomah, A.C. and Webster, J.B.},
  booktitle  = {The Cambridge history of Africa, 5: from c.1790 to c.1870},
  editor     = {Flint, John E.},
  pages      = {270-318},
  publisher  = {Cambridge Univ. Press},
  title      = {East Africa: the expansion of commerce},
  year       = {1976},
  inlg       = {English [eng]},
  keywords   = {;nea;eaf;kny;tnz;kny;ant;hst;bnt;g.40;x.211;},
  lgcode     = {Ta'izzi-Adeni Arabic [acq]},
  macro_area = {Eurasia},
  src        = {eballiso2009}
}