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5th international report on the prevention and suppression of dust in mining, tunnelling and quarrying, 1968-1972.
| Formato: | Libro |
|---|---|
| Lenguaje: | English |
| Publicado: |
Geneva :
International Labour Office,
1977.
|
| Colección: | Occupational safety and health series ;
40 |
| Materias: |