Aspectos economicos de la mineria en Mexico : caso el opalo
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| Other Authors: | , |
| Format: | Tesis de licenciatura |
| Published: |
MX
1974
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| Subjects: | |
| Online Access: | https://hdl.handle.net/20.500.14330/TES01000114835 http://132.248.9.195/pmig2020/0114835/Index.html |