- Race Track Equipment & Supplies, Middleburg
- Ready Mix Concrete, Middleburg - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Middleburg
- Real Estate, Middleburg - Agent, Broker & Companies
- Real Estate Listings Services, Middleburg
- Real Estate Services, Middleburg
- Recycling Drop-Off Centers, Middleburg
- Religious Goods & Church Supplies Stores, Middleburg
- Religious Organizations, Middleburg
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- Religious Services, Middleburg
- Repair Services, Middleburg
- Residential, Middleburg
- Residential Apartments, Middleburg
- Restaurants/Food & Dining, Middleburg
- Roofing Consultants, Middleburg - Roofing Companies
- Roofing Contractors, Middleburg - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Roofing Materials & Supplies, Middleburg
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