The structures underpinning vulnerability: examining landscape-society interactions in a smallholder coffee agroforestry system oleh Alexandra C Morel, Mark Hirons, Sheleme Demissie, Techane Gonfa, Zia Mehrabi, Peter R Long, Sami Rifai, Tadesse Woldemariam Gole, John Mason, Constance L McDermott, Emily Boyd, Elizabeth J Z Robinson, Yadvinder Malhi, Ken Norris