  1996 - Trevethick's Occupational Health Hazards a Practical Industrial Guide (Paperback) → Hardcover ISBN-13: 9780750617949 ISBN-10: 0750617942 Genre: Science & Math ?  1990 - Trevethick's Occupational Health Hazards a Practical Industrial Guide (Hardcover) → Paperback ISBN-13: 9780433326588 ISBN-10: 0433326581 ? |
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