- Radio Stations & Broadcasting Companies, Philadelphia
- Ready Mix Concrete, Philadelphia - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Philadelphia
- Real Estate, Philadelphia - Agent, Broker & Companies
- Real Estate Appraiser, Philadelphia - Appraisal Services
- Real Estate Appraisers & Consulting Services, Philadelphia
- Real Estate Attorneys & Lawyers, Philadelphia
- Real Estate Attorneys & Lawyers, Philadelphia
- Real Estate Lawyers & Attorneys, Philadelphia
- Real Estate Services, Philadelphia
- Recycling Scrap & Waste Materials, Philadelphia - Scrap Metal, etc
- Reducing Exercise & Weight Control Services, Philadelphia
- Refrigeration & Air Conditioning Contractors, Philadelphia - Installation, Repair, Sales & Service
- Refrigeration & Cooling Equipment, Parts & Supplies , Philadelphia - Water Cooler, Ice Machine, Beverage Dispenser, etc
- Rehabilitation Centers, Products & Services, Philadelphia
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- Rehabilitation Specialists, Philadelphia
- Relief Organizations, Philadelphia
- Religious Organizations, Philadelphia
- Rental & Leasing Business Equipment, Philadelphia
- Repair Services, Philadelphia
- Research Services, Philadelphia
- Residential, Philadelphia
- Residential Apartments, Philadelphia
- Residential Architectural Designers, Philadelphia
- Residential Care Facilities, Philadelphia
- Resorts & Hotels, Philadelphia
- Restaurants/Food & Dining, Philadelphia
- Retirement Communities & Home, Assisted Living & Apartments, Philadelphia
- Rv Parks, Philadelphia
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