| 000 | 00630nam a2200241Ia 4500 | ||
|---|---|---|---|
| 008 | 200129s9999 xx 000 0 und d | ||
| 041 | 0 | _aspa | |
| 082 | 0 | 4 | _a228.9/C3528/1.1.008(c) |
| 100 | 1 | _aCastillo Romo, Esperanza | |
| 245 | 0 |
_aEducacion ambiental y conciencia ecoñogica: _b cuestion de equilibrio |
|
| 250 | _aPETROECUADOR | ||
| 264 |
_aEcuador , _c1991 |
||
| 300 | _a108p. 22cm | ||
| 336 | _atxt | ||
| 337 | _an | ||
| 338 | _anc | ||
| 490 | 0 | _aAmbiente | |
| 650 | 0 | 4 | _aBIOSFERA |
| 650 | 0 | 4 | _aBIOTICOS |
| 650 | 0 | 4 | _aCOMPONENTES ABIOTICOS |
| 650 | 0 | 4 | _aHABITAT |
| 999 |
_c256520 _d256520 |
||
| 942 | 0 | 0 | _00 |