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| 040 | _cLIBRARY | ||
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_97551 _aHammer, Willie |
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_aOccupational safety management and engineering _cWillie Hammer |
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| 250 | _a4th ed. | ||
| 260 | _cc.1989 | ||
| 650 |
_97556 _aMechanicval; Engineering _xME |
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