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Subject
- Corporations9
- Perkin-Elmer Corporation9
- Scientific apparatus and instruments9
- Water9
- Water--Testing9
- Employees7
- Laboratories6
- Atomic absorption spectroscopy5
- Atomizers4
- Women employees4
- Water-supply--Testing3
- Chemists2
- Spectrophotometer2
- United States. Environmental Protection Agency2
- African Americans1
- Detroit Edison Company1
- Gas chromatography1
- Gas chromatography--Instruments1
- Infrared spectroscopy1
- Spectrophotometry1