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| 082 |
_a549.23 _bM48 |
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| 100 | _aMEYER, R.F. Y OTRO | ||
| 245 | 4 | _aTHE FUTURE OF SMALL SCALE MINING | |
| 250 | _a0 | ||
| 260 |
_aU.S.A. _bMCGRAW-HILL/INTERAMERICAN _c1980 |
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| 300 |
_a502 pag _c29.5 cm |
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| 341 | _h0 | ||
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| 505 | _aGEOLOGY-DEPOSITS-COMMODITIES/MINERAL PRODUCTION-MARKETING | ||
| 541 |
_aC _d08-Feb-99 |
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| 650 | _aCIENCIAS PURAS | ||
| 856 | _zCC. Puras | ||
| 942 | _cLIBRO | ||
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