| وصف المادة: | "Published by the World Health Organization in collaboration with the United Nations Environment Programme and the International Labour Organization". Includes index. |
|---|---|
| وصف مادي: | xiv, 315 p. : ill. ; 24 cm. |
| ردمك: | 9241544813 |
| وصف المادة: | "Published by the World Health Organization in collaboration with the United Nations Environment Programme and the International Labour Organization". Includes index. |
|---|---|
| وصف مادي: | xiv, 315 p. : ill. ; 24 cm. |
| ردمك: | 9241544813 |