= Медицина - справочници
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| [книга] |
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| Encyclopaedia of Occupational Health and Safety |
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| Geneva : International Labour Office |
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| 1974 |
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ISBN: | 92-2-101000-7 |
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| Vol. 1. A-K ISBN 92-2-101001-5 | |
| Vol. 2. L-Z ISBN 92-2-101002-3 |
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