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Subject
- Chemical industry25
- Corporations25
- Dow Chemical Company24
- Advertising15
- Advertising, Industrial15
- Magnesium9
- Magnesium industry and trade9
- Seawater9
- Water--Softening9
- Water--Softening--Equipment and supplies9
- Magnesium alloys8
- Water7
- World War (1939-1945)7
- Women in advertising6
- Water quality5
- Water--Hardness4
- Beckman Instruments, Inc.3
- Hydrogen-ion concentration--Measurement--Instruments3
- Scientific apparatus and instruments3
- Solvents3