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geología (5) |
minería (5) |
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plata (5) |
550.8 : 622.1 (825.3) + (826.7) (047) (1) |
550.8+ 622.1 : 622.342 (825.1) (047) (1) |
553.41 : 553.43 (828.8) (047) (1) |
553.411 (823.3) (047) (1) |
553.411 (828.6) (047) (1) |