Environmental management of small-scale and artisanal mining: the Portovelo-Zaruma goldmining area, southern Ecuador
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Cómo citar
Håkan Tarras-Wahlberg (2002). Environmental management of small-scale and artisanal mining: the Portovelo-Zaruma goldmining area, southern Ecuador. https://doi.org/10.1006/jema.2002.0542