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1 | General engineering : health and safety 1977-82 / [National Industry Group]. — London : Her Majesty´s Stationery Office, 1984. — 19 p. : il., gráf. ; 30 cm. — ( Health & safety executive) |
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1 | General engineering : health and safety 1977-82 / [National Industry Group]. — London : Her Majesty´s Stationery Office, 1984. — 19 p. : il., gráf. ; 30 cm. — ( Health & safety executive) |