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geología (2) |
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553.411 (823.3) (047) (1) |
622.2 (825.2) (047) (1) |
oro (1) |
plata (1) |
San Juan (Argentina) (1) |
San Luis (Argentina) (1) |
geología (2) |
minería (2) |
perforación (2) |
553.411 (823.3) (047) (1) |
622.2 (825.2) (047) (1) |
oro (1) |
plata (1) |
San Juan (Argentina) (1) |
San Luis (Argentina) (1) |