| Physicians & Surgeons-MD-Surgery- General | 670 |
| Physicians & Surgeons-MD-Surgery- Hand | 670 |
| Physicians & Surgeons-MD-Surgery- Orthopedic | 670 |
| Physicians & Surgeons-MD-Surgery- Plastic | 671 |
| Physicians & Surgeons-MD-Surgery- Vascular | 671 |
| Physicians & Surgeons-MD-Urology (Urinary | 671 |
| Tract) |
| Physicians & Surgeons-MD-X-Ray | 672 |
| Physicians’ & Surgeons’ Referral Service | 672 |
| Pianos | 672 |
| Pianos & Organs-Moving | 673 |
| Pianos-Tuning, Repairing & Refinishing | 673 |
| Picture Frames-Dealers | 673 |
| Picture Frames-Restoring & Repairing | 673 |
| Picture Frames-Whsle & Mfrs | 673 |
| Picture Hanging Service | 673 |
| Piercing-Ear & Body | 673 |
| Pile Driving | 673 |
| Piling | 674 |
| Pipe | 674 |
| Pipe & Boiler Covering Materials | 674 |
| Pipe Bending & Fabricating | 674 |
| Pipe Cutting & Threading | 674 |
| Pipe Fittings | 674 |
| Pipe Fittings-Whsle & Mfrs | 674 |
| Pipe Hangers | 674 |
| Pipe Inspection | 674 |
| Pipe Sealing Service Industrial | 674 |
| Pipe-Used | 674 |
| Pipeline Companies | 675 |
| Pipeline Contractors | 675 |
| Pipelining & Coating | 675 |
| Pipes & Smokers’ Articles | 675 |
| Pipe-Whsle | 675 |
| Piping Contractors | 675 |
| Pizza | 675 |
| Planetariums | 680 |
| Plantation Homes | 680 |
| Plants | 680 |
| Plants-Interior Design & Maintenance | 680 |
| Plaques | 680 |
| Plasma Centers | 680 |
| Plaster | 680 |
| Plasterers’ Equipment & Supplies | 680 |
| Plastics Raw Materials-Powders, Liquids, Resins | 680 |
| , Etc |
| Plastics-Extruders | 680 |
| Plastics-Fabricating, Finishing & Decorating | 680 |
| Plastics-Products-Finished-Whsle & Mfrs | 680 |
| Plastics-Reinforced | 681 |
| Plastics-Rods, Tubes, Sheets, Etc-Supply | 681 |
| Centers |
| Plating | 681 |
| Playground Equipment | 681 |
| Plumbing Contractors | 681 |
| Plumbing Drains & Sewer Cleaning | 685 |
| Plumbing Fixtures, Parts & Supplies- New | 686 |
| Plumbing Fixtures, Parts & Supplies- Used | 686 |
| Plumbing Fixtures, Parts & Supplies- Whsle & | 686 |
| Mfrs |
| Plywood & Veneers | 686 |
| Pneumatic Equipment Components | 686 |
| Podiatrists | 687 |
| Police Departments | 688 |
| Police Equipment | 689 |
| Political Organizations | 689 |
| Ponds-Fish | 689 |
| Popcorn & Popcorn Supplies | 691 |
| Porcelain Enamel Repairing & Refinishing | 691 |