Verlag Arbeitsgemeinsch. Geographica BernensiaHans Hurni × Reconciling Conservation with Sustainable DevelopmentA Participatory Study Inside and Around the Simen Mountains National Park, EthiopiaHans HurniArbeitsgemeinsch. Geographica BernensiaHardcover2000 Precious EarthFrom soil and water conservation to sustainable land managementHans HurniArbeitsgemeinsch. Geographica BernensiaSoftcover1996
