| 000 | nam a22 7a 4500 | ||
|---|---|---|---|
| 999 |
_c4542 _d4542 |
||
| 003 | OSt | ||
| 005 | 20210331112410.0 | ||
| 008 | 170718b xxu||||| |||| 00| 0 eng d | ||
| 040 | _cNARA | ||
| 100 |
_920832 _aCentaral Environmental Authority |
||
| 245 | _aWater Pollution Survey with an Ultra Light Aircraft, Colombo - Phase II ( Final Report) | ||
| 260 |
_aSri Lanka, _bCentaral Environmental Authority, _c1987 June, |
||
| 650 | 0 |
_912780 _aWater Pollution |
|
| 650 | 0 |
_912782 _aAircraft |
|
| 942 |
_2udc _cREF |
||