| 000 | 003510000a22000970004500 | ||
|---|---|---|---|
| 090 |
_aAR _b04713 |
||
| 245 | 1 | 0 | _aOrganisms combined make up one ten billionth of earth's mass a thin veneer on the planet's surface can this delicate coating of life survive the human assault? |
| 041 | 0 | _aInglés | |
| 942 | _cARTICULO | ||
| 773 | 1 |
_tDiscover _h9 _q46-68 _d1992 _g13 |
|
| 999 |
_c13813 _d13813 |
||