| 000 | 00439cam a2200145ua 4500 | ||
|---|---|---|---|
| 999 |
_c269900 _d269900 |
||
| 003 | OSt | ||
| 008 | 191023b ||||| |||| 00| 0 eng d | ||
| 082 |
_a628 _bWHO/EX |
||
| 245 | _aExpert committee on environmental sanitation / Technical series report No.157 | ||
| 260 |
_aGeneva : _bWorld Health Organisation , _c1954. |
||
| 300 | _a25 ; . | ||
| 490 | 0 | _aWHO Technical report series, | |
| 650 |
_aTechnical report _94398 |
||
| 942 | _cBK | ||