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![](./images/clear.gif) 1.- BOLIVIAN MINING POLLUTION; PAST, PRESENT AND FUTURE
ROYAL SWEDISH ACADEMY OF SCIENCES; STOCKHOLM; SWE; SWEDEN, 1998
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![](./images/clear.gif) 2.- MERCURY MINING; PROFIT OR LOSS?
MACMILLAN JOURNALS; LONDON; GBR; UNITED KINGDOM, 1997
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