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Journal of Industrial Ecology. Proceedings of the National Academy of Sciences. Royal Society Publishing. Journal home : Nature. Raphael Lis, Charles C.

Journal home : Nature

Karrasch, Michael G. Poulos, Balvir Kunar, David Redmond, Jose G. Barcia Duran, Chaitanya R. CiteSeerX. Scirus - for scientific information. Electronic Library. SpringerLink. PLoS ONE.