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Michael M Hughes: Blue
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Michael M Hughes: Lab color study
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Michael M Hughes: Test tubes
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Michael M Hughes: Hose study
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Michael M Hughes: Pink tube field
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Michael M Hughes: Labeled tubes
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Michael M Hughes: Orange tubes
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Michael M Hughes: Styrofoam study
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Michael M Hughes: Glass shelf
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Michael M Hughes: Tube study
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Michael M Hughes: Glassware
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Michael M Hughes: Pink and tubes
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Michael M Hughes: Petri dishes
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Michael M Hughes: Tube pile
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Michael M Hughes: Red and tubes
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Michael M Hughes: Yellow
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Michael M Hughes: Glass, liquid