127046document47558Pierer_Resources, Conservation and Recycling_2015.pdfapplication/pdf174ec660356855e55e777a60466cdd5bMD512250622016-04-04 06:59:09https://pure.iiasa.ac.at/id/eprint/11432/1/Pierer_Resources%2C%20Conservation%20and%20Recycling_2015.pdf