| 000 | 00331nam a2200121Ia 4500 | ||
|---|---|---|---|
| 100 | _aWorld Health Organization | ||
| 020 | _a92 4 156068 1 | ||
| 942 | _cBK | ||
| 245 |
_aDrinking-water and sanitation, 1981-1990 _bA way to health |
||
| 260 |
_aWorld Health Organization, Geneva _c1981 |
||
| 082 | _a614.772 W.H.O. | ||
| 300 | _aiii,56p | ||
| 999 |
_c18477 _d18477 |
||