- Radio & Television Repair Shops , Donora - TV Repair
- Real Estate, Donora - Agent, Broker & Companies
- Real Estate Attorneys & Lawyers, Donora
- Real Estate Services, Donora
- Religious Education, Donora
- Religious Organizations, Donora
- Religious Practitioners, Donora
- Repair Services, Donora
- Residential, Donora
- Residential Apartments, Donora
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- Residential Care Facilities, Donora
- Restaurant Equipment, Donora
- Restaurant Equipment & Supplies, Donora
- Restaurant Equipment Repair & Service, Donora - Bakery, Beverage, Food & Soda Fountain Equipment
- Restaurant Supplies & Equipment, Donora
- Restaurants/Food & Dining, Donora
- Retirement Communities & Home, Assisted Living & Apartments, Donora
- Road Construction, Donora - Companies & Contractors
- Roofing Consultants, Donora - Roofing Companies
- Roofing Contractors, Donora - Roof Repair, Cleaning, Installation & Maintenance - Roofers
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