Image: Evolution minerai plomb
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Description: Evolution of the extracted lead ore grade in different countries (Canada, Australia).
Title: Evolution minerai plomb
Credit: Own work, graphic from The “Limits to Growth” and ‘Finite’ Mineral Resources, p. 8, Gavin M. Mudd
Author: Borvan53
Usage Terms: Creative Commons Attribution-Share Alike 4.0
License: CC BY-SA 4.0
License Link: https://creativecommons.org/licenses/by-sa/4.0
Attribution Required?: Yes
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