| 000 | 00393nam a2200145Ia 4500 | ||
|---|---|---|---|
| 082 |
_a363.73 _bHAV |
||
| 100 |
_aHabibullah, P. Dr. _911536 |
||
| 245 | _aVentilation pollution-hazards of depletion of ozone layer by CFC,s of refrigerants | ||
| 260 |
_aKarachi _bPSC _c1991 |
||
| 300 | _axi, 72p. | ||
| 546 | _aeng | ||
| 650 |
_aPollution _911537 |
||
| 650 |
_aVentilatation _911538 |
||
| 942 | _cBK | ||
| 999 |
_c29980 _d29980 |
||