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1951-323_5 |
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chemistry laboratory beakers test tube test tube stand retort stand spirit burner alembic funnels filter paper pestle and mortar thermometer chemicals measuring scales pipette wooden shelf bottled chemicals steam kettle glass stirrer laterally reversed bowls camera camera lens crucibles |
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1978-493 |
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chemistry laboratory beakers test tube test tube stand retort stand spirit burner alembic funnels filter paper pestle and mortar thermometer chemicals measuring scales pipette wooden shelf bottled chemicals steam kettle glass stirrer laterally reversed bowls camera camera lens |