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Preview | Issue Date | Title | Author(s) |
---|---|---|---|
1980 | Conversatorio Internacional sobre Minería sin rieles - [Boletín E 1] | Instituto Geológico, Minero y Metalúrgico - INGEMMET | |
1980 | Formación de Mineros: manual del instructor - [Boletín E 2] | Instituto Geológico, Minero y Metalúrgico - INGEMMET |
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- 2 1980