1.
Geneva; World Health Organization; 2000. (WHO/SDE/WSH/00.9).
in English
| WHO IRIS
| ID: who-67023
2.
Geneva; World Health Organization; 1999. (WHO/SDE/WSH/99.02).
in English
| WHO IRIS
| ID: who-66008
3.
Geneva; World Health Organization; 1995. (WHO/EOS/95.5. Unpublished).
in English
| WHO IRIS
| ID: who-62456
4.
Article
| PAHO-IRIS
| ID: phr-43226
5.
Geneva; World Health Organization; 1994. 91 p. (WHO/EOS/94.37).
Monography
in English
| PAHO
| ID: pah-21341
6.
Geneva; World Health Organization; 1994. (WHO/EOS/94.37. Unpublished).
in English
| WHO IRIS
| ID: who-59971
7.
Geneva; World Health Organization; 1993. (WHO/CWS/93.2. Unpublished).
in English
| WHO IRIS
| ID: who-60539