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Subject
- Chemical engineering[remove]1
- Chemical engineers1
- Diamond Alkali Company1
- Katzen, Raphael, 1915-20091
- Northwood Chemical Company (Phelps, Wis)1
- Othmer, Donald F. (Donald Frederick), 1904-19951
- Othmer, Mildred Topp, 1907-19981
- Polytechnic Institute of Brooklyn1
- Raphael Katzen Associates1
- Raphael Katzen Associates International1
- Vulcan-Cincinnati, Inc.1