Drinking-water and sanitation, 1981-1990 : a way to health.
| Format: | Book |
|---|---|
| Language: | English |
| Published: |
Geneva :
World Health Organization,
1981.
|
| Subjects: |
| Physical Description: | 56 σ. ; 24 εκ. |
|---|---|
| Bibliography: | Περιέχει βιβλιογραφίες. |
| ISBN: | 9241560681 |