2 interventi di Boniface Vignon

  1. audio
    30.11.2015

    Cop 21 - Intervista a Boniface Vignon

    11:35

    Durata: 0:05:03

  2. audio
    17.11.2009

    World Summit on Food Security (Rome 16 - 18 November 2009): intervista a Boniface Vignon

    Durata: 0:18:42