@incollection{Spangenberg1993,
  author    = {Spangenberg, Joachim H.},
  title     = {Gentechnik und Welthandel},
  booktitle = {Biotechnologie : Mittel gegen den Welthunger?},
  editor    = {Studier, Alphons},
  publisher = {Dt. {\"U}bersee-Inst.},
  address   = {Hamburg},
  pages     = {271 -- 2822},
  year      = {1993},
  language  = {de}
}