Vanilla industry -- Corrupt practices : Planet E. Episode 21, Vanilla : the hunt for the brown gold / a film by Andreas Ewels, Norbert Porta ; written by Andreas Ewels, Norbert Porta ; production ZDF, Alexandre Kegler, Sigrid Beck ; produced by Norbert Porta Sciencedocu on behalf of ZDF
2018
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Vanilla industry -- Environmental aspects : Planet E. Episode 21, Vanilla : the hunt for the brown gold / a film by Andreas Ewels, Norbert Porta ; written by Andreas Ewels, Norbert Porta ; production ZDF, Alexandre Kegler, Sigrid Beck ; produced by Norbert Porta Sciencedocu on behalf of ZDF