- Radiator Repair, Glenolden - Gas Tank Repair
- Radio & Television Repair Shops , Glenolden - TV Repair
- Ready Mix Concrete, Glenolden - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Glenolden
- Real Estate, Glenolden - Agent, Broker & Companies
- Real Estate Management, Glenolden
- Real Estate Rentals, Glenolden
- Real Estate Services, Glenolden
- Record Labels, Glenolden - Record Companies
- Recycling Drop-Off Centers, Glenolden
- Religious Organizations, Glenolden
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- Repair Services, Glenolden
- Research & Development Bureaus, Glenolden - Commercial, Economic, Sociological & Educational Research
- Research Services, Glenolden
- Residential, Glenolden
- Residential Apartments, Glenolden
- Restaurant & Lounge, Bar, Or Pub, Glenolden
- Restaurants/Food & Dining, Glenolden
- Roofing Consultants, Glenolden - Roofing Companies
- Roofing Contractors, Glenolden - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Roofing Materials & Supplies, Glenolden
- Rv Parks, Glenolden
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