| 000 | 00421nam a2200145 a 4500 | ||
|---|---|---|---|
| 005 | 20220228110733.0 | ||
| 035 | _aF8901000716698 | ||
| 084 | _aWB TN 6 1983 | ||
| 100 | _aRyan, Beverly A. | ||
| 245 | _aVentilated improved pit latrines: vent pipe design guidelin-es / by Beverly A. Ryan. | ||
| 260 | _aWashington, D. C. : World Bank | ||
| 300 | _a22 p. | ||
| 440 | _aTechnical note; no. 6 | ||
| 690 | _aLetrinas - diseño. | ||
| 999 |
_c63440 _d63440 |
||