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- Colorimetry--Instruments[remove]11
- Colorimetry8
- Scientific apparatus and instruments5
- Beckman Instruments, Inc.4
- Bausch & Lomb Optical Company3
- Colorimetric analysis2
- Absorption spectra1
- Analytical chemistry1
- Dow Chemical Company1
- Duboscq, J. (Jules), 1817-18861
- Electronics in space medicine1
- Employees1
- Geary, James1
- Industries1
- Klett Manufacturing Company1
- Klett, Robert E.1
- Laboratories1
- Minneapolis-Honeywell Regulator Company1
- Photovolt Corporation1