Subject
- Oeffner, Larry1
- Order picking systems1
- Packaging1
- Pahl, Bill1
- Parkinson, Francis, Jr.1
- Pesticides1
- Pesticides industry1
- Photography--Printing processes1
- Photography--Retouching1
- Physicists1
- Pillsbury Company1
- Pilot plants1
- Pletcher, D.E.1
- Portraits1
- Pressure gages1
- Preznowiak, Margaret1
- Printers1
- Projectors1
- Public officers1
- Radioactive substances1