Enlace original:
https://wedocs.unep.org//handle/20.500.11822/22895
United Nations Environment Programme
,
Artisanal Gold Council
,
[Introduction à l'EMAPE - Cours 1, Introducción a la MAPE - Clase 1]
,
[Introduction to ASGM - Lecture 1]
,
Introduction to ASGM - Lecture 1