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Subject
- Business and Industry[remove]8
- Plastics8
- Correspondence.6
- Photographs.6
- Engineers.5
- Clippings (information artifacts)4
- Inventors.4
- Newsletters.4
- Plastics industry and trade.4
- Technical reports.4
- Brochures.3
- Businessmen.3
- Advertisements.2
- Articles.2
- Blueprints (reprographic copies)2
- CD-ROMs.2
- Industrial Design2
- Interviews.2
- Plastics -- History.2
- Plastics -- Research.2