By Giger Markus   Hurni Hans   Portner Brigitte   Scheidegger Urs   in GAIA - Ecological Perspectives for Science and Society

ISSN:0940-5550|17|3|280-286

oekom verlag‎(2008)‎

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By Portner Brigitte   Ehrensperger Albrecht   Nezir Zufan   Breu Thomas   Hurni Hans   in Sustainability

ISSN:2071-1050|6|9|6188-6202

MDPI‎(2014)‎

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