| 000 | 00363 a2200121 4500 | ||
|---|---|---|---|
| 041 | _aEn | ||
| 082 |
_a333.7 _bGEM |
||
| 245 |
_aGEMS/AIR methodology review Vol; 1 _bquality assurance in urban air quality monitoring |
||
| 260 |
_c1994 _aNairobi _bUnited Nations Environment Programme _g1994 |
||
| 300 |
_c29 cm. _avi,40 p. |
||
| 650 | _aENVIRONMENT-STUDY | ||
| 942 | _cSR | ||
| 999 |
_c32717 _d34264 |
||