| 000 | 00686nab a2200241 1n4500 | ||
|---|---|---|---|
| 001 | 000103859 | ||
| 005 | 20250722192632.0 | ||
| 008 | 950525s1994 000 0 spa d | ||
| 041 | 0 | 7 |
_aSpa _2ISO 639-1 |
| 084 | _aRev 980 | ||
| 100 | 1 |
_aVera León, Ramón _938239 |
|
| 245 | 1 | 0 |
_aCODIGEM... : _bProyecciones |
| 650 | 0 | 4 |
_aRecherche scientifique _921 |
| 650 | 0 | 4 |
_aIndustrie minière _95884 |
| 650 | 0 | 4 |
_aProjection _97205 |
| 650 | 0 | 4 |
_aDéveloppement _9870 |
| 650 | 0 | 4 |
_aPolitique scientifique _938240 |
| 653 | 0 | 5 | _aEquateur |
| 773 | 0 |
_tMinería ecuatoriana _dQuito : [s.n.], 1994 _g3, 1994, p. 11-12 |
|
| 910 |
_aGSL _c20150612 _h1029 |
||
| 942 | _cANAL | ||
| 999 |
_c29714 _d29714 |
||