United Nations Conference on Sustainable Development (UNCSD) - Rio+20: What an effort for such a meager result
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@article{urn:nbn:de:hebis:34-2014021045026, author ={Vogtmann, Hardy and Maier, Jürgen}, title ={United Nations Conference on Sustainable Development (UNCSD) - Rio+20: What an effort for such a meager result}, copyright ={https://rightsstatements.org/page/InC/1.0/}, language ={en}, year ={2013} }