| 000 | 00385nam a2200157Ia 4500 | ||
|---|---|---|---|
| 008 | 230711s9999||||xx |||||||||||||| ||und|| | ||
| 041 | _aENG | ||
| 082 | _awo-s | ||
| 100 | _aWorld Health Organisation | ||
| 245 | 0 | _aSlow sand filtration | |
| 250 | _a1st | ||
| 260 |
_c1974 _aNew Delhi _bWorld Health Organisation Geneva |
||
| 300 | _a122 | ||
| 650 | _aCivil Engineering | ||
| 942 | _cBK | ||
| 999 |
_c2078 _d2078 |
||