By Wilhelm Ralph   in GAIA - Ecological Perspectives for Science and Society

ISSN:0940-5550|24|3|199-200

oekom verlag‎(2015)‎

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By Fütterer Nadine   Wilhelm Ralph   in GAIA - Ecological Perspectives for Science and Society

ISSN:0940-5550|18|1|74-76

oekom verlag‎(2009)‎

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