| 000 | 003370000a22001090004500 | ||
|---|---|---|---|
| 090 |
_aAR _b03919 |
||
| 245 | 1 | 0 |
_aBiosphere reserves and national parks _scomplementary systems of natural protection |
| 041 | 0 | _aInglés | |
| 100 | 1 |
_aHalffter, Gonzalo _910302 |
|
| 942 | _cARTICULO | ||
| 773 | 1 |
_tImpact of Science on society _h4 _q269-277 _d1980 _g30 |
|
| 999 |
_c13184 _d13184 |
||